IMAPsync czyli zbawienie dla migracji serwerów pocztowych oraz kilka słów dlaczego nie warto korzystać z poczty Onetu i WP.pl

Przeczytasz to w: 23 minut

Czasami zdarza się taki moment, że nas serwer jest za stary, by go migrować i trzeba jakoś przenieść serwer, czasami admini chcą zmienić serwer pocztowy na jakieś inne rozwiązanie typu przenieść się na serwer Exchange z Postfix/Dovecot, lub po prostu zmienić dostawcę pocztowego, bo ileż można dostawać spam od Onetu czy WP? Poza takimi błahostkami jak przeniesienie prywatnej skrzynki pocztowej te narzędzie pozwala na masowe przenoszenie skrzynek. Jedyny minus rozwiązania jest taki, że trzeba zresetować wszystkim hasła na czas migracji.

Postaram się pokazać kilka scenariuszy przenoszenia skrzynek, przy czym w dużej mierze początkowa instalacja zawsze jest taka sama – jedyna różnica jest w ustawieniach programu. IMAPsync jest aplikacją, która zadziała na Windowsie i Linuksie, ale szczerze powiedziawszy miałem problem z jej działaniem spod Windowsa, więc używam Linuksa do operacji na nim. W przypadku posiadania Windowsa używam Linux Subsystem for Windows (WSL), bo dzięki temu na tym samym hoście można korzystać na wybranej dystrybucji Linuksa bez jakichkolwiek problemów.

Pierwszą rzeczą, którą należy zrobić jest włączenie funkcji w Windows 10/Windows Server 2016/Windows Server 2019:

Następnie, w przypadku Windows 10 znajdujemy w Microsoft Store aplikację o nazwie Ubuntu 18.04 (miałem problemy z działaniem IMAPsync na 20.04, prawdopodobnie ze względu na inną wersję OpenSSL) i ją instalujemy:

W Windowsie Server jest o tyle inaczej, że nie ma tam Microsoft Store. Taką paczkę należy pobrać z Internetu i zmienić jej format na .zip, bo w rzeczywistości to jest archiwum. Całość jest opisana w tym dokumencie. Na wypadek, gdyby zniknął, ściągamy z tego linku plik.

Zanim odpalimy aplikację, musimy uruchomić system ponownie. Jeśli tego nie zrobimy, najpewniej zobaczymy ten błąd:

W przypadku Windows Server należy odpalić aplikację ubuntu1804.exe, która jest wewnątrz rozpakowanego archiwum.

Po restarcie należy zdefiniować konto użytkownika i hasło:

Po tym należy wykonać polecenia, aby zainstalować IMAPsynca:

sudo apt update
sudo apt install libauthen-ntlm-perl libclass-load-perl libcrypt-ssleay-perl libdata-uniqid-perl libdigest-hmac-perl libdist-checkconflicts-perl \
libencode-imaputf7-perl libfile-copy-recursive-perl libfile-tail-perl libio-compress-perl libio-socket-inet6-perl libio-socket-ssl-perl libio-tee-perl \
libmail-imapclient-perl libmodule-scandeps-perl libnet-dbus-perl libnet-ssleay-perl libpar-packer-perl libreadonly-perl libregexp-common-perl \
libsys-meminfo-perl libterm-readkey-perl libtest-fatal-perl libtest-mock-guard-perl libtest-mockobject-perl libtest-pod-perl libtest-requires-perl \
libtest-simple-perl libunicode-string-perl liburi-perl libtest-nowarnings-perl libtest-deep-perl libtest-warn-perl make cpanminus apt-file libcrypt-openssl-rsa-perl libjson-webtoken-perl libcrypt-openssl-bignum-perl libcgi-pm-perl
sudo cpanm CGI
git clone https://github.com/imapsync/imapsync
cd imapsync/INSTALL.d
sudo ./prerequisites_imapsync

Jeśli wynik jest następujący – powinniśmy dostać mniej więcej następujący wynik:

supra@supra-pc:~/imapsync/INSTALL.d$ sudo ./prerequisites_imapsync
$SHELL says  /bin/bash
$0 gives  ./prerequisites_imapsync
ps -ef gives root     15542 15541  0 10:42 tty1     00:00:00 /bin/sh ./prerequisites_imapsync
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.4 LTS
Release:        18.04
Codename:       bionic
Linux supra-pc 4.4.0-19041-Microsoft #1-Microsoft Fri Dec 06 14:06:00 PST 2019 x86_64 x86_64 x86_64 GNU/Linux
Ok: Found Perl 5.26.1
make: Nothing to be done for 'foo'.
Ok: Found make GNU Make 4.1
Ok: Found Perl module App::cpanminus
Ok: Found Perl module Authen::NTLM
Ok: Found Perl module CGI
Ok: Found Perl module Compress::Zlib
Ok: Found Perl module Crypt::OpenSSL::RSA
Ok: Found Perl module Data::Dumper
Ok: Found Perl module Data::Uniqid
Ok: Found Perl module Digest::HMAC
Ok: Found Perl module Digest::HMAC_MD5
Ok: Found Perl module Digest::MD5
Ok: Found Perl module Dist::CheckConflicts
Ok: Found Perl module Encode
Ok: Found Perl module Encode::Byte
Ok: Found Perl module Encode::IMAPUTF7
Ok: Found Perl module File::Copy::Recursive
Ok: Found Perl module File::Tail
Ok: Found Perl module IO::Socket::INET
Ok: Found Perl module IO::Socket::INET6
Ok: Found Perl module IO::Socket::SSL
Ok: Found Perl module IO::Tee
Ok: Found Perl module JSON
Ok: Found Perl module JSON::WebToken
Ok: Found Perl module JSON::WebToken::Crypt::RSA
Ok: Found Perl module HTML::Entities
Ok: Found Perl module LWP::UserAgent
Ok: Found Perl module Mail::IMAPClient
Ok: Found Perl module MIME::Base64
Ok: Found Perl module Module::Implementation
Ok: Found Perl module Module::Runtime
Ok: Found Perl module Module::ScanDeps
Ok: Found Perl module Net::SSLeay
Ok: Found Perl module Package::Stash
Ok: Found Perl module Package::Stash::XS
Ok: Found Perl module PAR::Packer
Ok: Found Perl module Parse::RecDescent
Ok: Found Perl module Pod::Usage
Ok: Found Perl module Readonly
Ok: Found Perl module Regexp::Common
Ok: Found Perl module Sys::MemInfo
Ok: Found Perl module Term::ReadKey
Ok: Found Perl module Test::Fatal
Ok: Found Perl module Test::Mock::Guard
Ok: Found Perl module Test::MockObject
Ok: Found Perl module Test::More
Ok: Found Perl module Test::Pod
Ok: Found Perl module Test::Requires
Ok: Found Perl module Test::Deep
Ok: Found Perl module Text::ParseWords
Ok: Found Perl module Try::Tiny
Ok: Found Perl module Unicode::String
Ok: Found Perl module URI::Escape
All needed modules are already installed
Ok: Found cpanm cpanm (App::cpanminus) version 1.7043 (/usr/bin/cpanm)

Mając to można wrócić do głównego katalogu sklonowanego repozytorium Gita i zanim odpalimy IMAPsync warto sprawdzić dane do serwera pocztowego. Aby wykonać synchronizację, należy podać dane skrzynki, z której synchronizujemy wiadomości:

  • adres serwera pocztowego (opcja --host1),
  • port serwera pocztowego (opcja --port1, często opcjonalne, bo IMAPsync w przypadku prawidłowo zdefiniowanych wpisów w DNS sam wykryje odpowiedni port),
  • nazwa konta użytkownika (opcja --user1),
  • hasło konta użytkownika (opcja --password1),
  • wymuszenie wykorzystywania SSL (opcja --ssl1).

To samo podajemy dla docelowego serwera i użytkownika, lecz wykorzystujemy parametry z numerkiem 2 na końcu (np. --host2).

Wcześniej warto sprawdzić na jakim porcie serwer pocztowy nasłuchuje. Poniżej wykonuję test dla serwera OVH, to znaczy ssl0.ovh.net:

supra@supra-pc:/mnt/r/supra/Pobrane/imapsync-imapsync-1.945$ openssl s_client -connect ssl0.ovh.net:993 --showcerts -servername ssl0.ovh.net
CONNECTED(00000003)
depth=2 C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority
verify return:1
depth=1 C = GB, ST = Greater Manchester, L = Salford, O = Sectigo Limited, CN = Sectigo RSA Domain Validation Secure Server CA
verify return:1
depth=0 CN = ssl0.ovh.net
verify return:1
---
Certificate chain
 0 s:CN = ssl0.ovh.net
   i:C = GB, ST = Greater Manchester, L = Salford, O = Sectigo Limited, CN = Sectigo RSA Domain Validation Secure Server CA
-----BEGIN CERTIFICATE-----
MIIGujCCBaKgAwIBAgIRAKNd5nTWqiwzvsziDTAPdk4wDQYJKoZIhvcNAQELBQAw
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-----END CERTIFICATE-----
 1 s:C = GB, ST = Greater Manchester, L = Salford, O = Sectigo Limited, CN = Sectigo RSA Domain Validation Secure Server CA
   i:C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
 2 s:C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority
   i:C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST Network, CN = USERTrust RSA Certification Authority
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
---
Server certificate
subject=CN = ssl0.ovh.net

issuer=C = GB, ST = Greater Manchester, L = Salford, O = Sectigo Limited, CN = Sectigo RSA Domain Validation Secure Server CA

---
No client certificate CA names sent
Peer signing digest: SHA512
Peer signature type: RSA
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 5698 bytes and written 397 bytes
Verification: OK
---
New, TLSv1.2, Cipher is ECDHE-RSA-AES256-GCM-SHA384
Server public key is 4096 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : ECDHE-RSA-AES256-GCM-SHA384
    Session-ID: 94C2704B41535450C2E914E258FCF4261AE3830EBAF68050A459650A70DD6AE6
    Session-ID-ctx:
    Master-Key: 78941A4567E592C77B7767DBBC5046B91A108F7B2C7A1ED057C274F8C896337894BD28715CCF43EB981A9832DB147E15
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 7200 (seconds)
    TLS session ticket:
    0000 - 7d 83 2f ee 41 40 4d f7-7b 99 ea d7 5f 6e 3b 68   }./.A@M.{..._n;h
    0010 - 05 37 73 e7 89 63 2e 0a-ad 25 23 3f 28 d7 3e ed   .7s..c...%#?(.>.
    0020 - e4 e6 d4 33 52 10 24 49-84 93 7f 33 72 ed 50 20   ...3R.$I...3r.P
    0030 - 9b 55 40 21 01 86 99 37-21 78 bc 04 cb 4c 3a c7   .U@!...7!x...L:.
    0040 - ee 7a 29 45 d3 d0 88 a2-5c 4a d4 bc 56 54 71 0a   .z)E....\J..VTq.
    0050 - c4 e6 85 a1 4e 66 2d 46-7e e9 f2 03 63 97 e9 33   ....Nf-F~...c..3
    0060 - 1b a7 2c f2 9d da 93 03-bc d7 6b d2 c8 84 13 15   ..,.......k.....
    0070 - 46 05 d0 54 ce e5 e8 2a-41 7f 9b 15 a1 00 8a da   F..T...*A.......
    0080 - ff 8a ce 11 91 83 59 4a-47 be d5 18 da 47 4d a7   ......YJG....GM.
    0090 - d4 73 7a 5c 39 a1 21 ac-2b 5e 62 f4 47 ba fc e4   .sz\9.!.+^b.G...
    00a0 - e1 06 7d 80 81 53 9e 00-88 c7 13 d2 bc 07 a0 88   ..}..S..........

    Start Time: 1592435499
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: yes
---
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Dovecot on host 103 ready

* BAD Error in IMAP command received by server.

* BAD Error in IMAP command received by server.

* BYE Too many invalid IMAP commands.
closed

Na końcu komunikacji możemy zobaczyć jakie funkcjonalności ma ten serwer IMAP i możemy po tym nagłówku poznać jakie metody uwierzytelnienia są dostępne dla tego serwera. Poniżej kilka działajacych przykładów wykorzystania IMAPsync dla pojedynczej skrzynki:

Z serwera OVH na własny serwer

./imapsync --host1 ssl0.ovh.net --port1 993 --user1 test@test.com --password1 haslo123 --host2 mail.etf2l.site --user2 supra@etf2l.site --password2 haslo123 --ssl1 -ssl2

Z serwera GMail na własny serwer

./imapsync --host1 imap.gmail.com --port1 993 --user1 test@gmail.com --password1 haslo123 --host2 mail.etf2l.site --user2 supra@etf2l.site --password2 haslo123 --ssl1 -ssl2

Przy przykładzie z GMailem warto zerknąć na informacje dotyczące odblokowywania możliwości synchronizacji poniżej.

Z serwera Politechniki Śląskiej na własny serwer

./imapsync --host1 poczta.student.polsl.pl --port1 993 --user1 kontostudenckie@student.polsl.pl --password1 haslo123 --host2 mail.etf2l.site --user2 polsl@etf2l.site --password2 haslo --ssl1 -ssl2

Z serwera Onet.pl na serwer GMail

Przed synchronizacją należy włączyć obsługę IMAP dla konta oraz „dostęp do mniej bezpiecznych aplikacji”:

Taki problem da się też rozpoznać po logu:

Host2 capability before authentication: IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 XYZZY SASL-IR AUTH=XOAUTH2 AUTH=PLAIN AUTH=PLAIN-CLIENTTOKEN AUTH=OAUTHBEARER AUTH=XOAUTH AUTH
Host2 failure: Error login on [imap.gmail.com] with user [test@gmail.com] auth [LOGIN]: 2 NO [ALERT] Your account is not enabled for IMAP use. Please visit your Gmail settings page and enable your account for IMAP access. (Failure)
Exiting with return value 16 (EXIT_AUTHENTICATION_FAILURE)
Disconnecting from host1 imap.poczta.onet.pl user1 test@onet.pl
Log file is LOG_imapsync/2020_07_23_08_39_05_281_test@onet.pl_test@gmail.com.txt ( to change it, use --logfile filepath ; or use --nolog to turn off logging )

Końcowe polecenie jest takie:

./imapsync --host1 imap.poczta.onet.pl --user1 test@onet.pl --password1 "password123" --host2 imap.gmail.com --port2 993 --user2 test@gmail.com --password2 "password123" --ssl1 -ssl2

Przy okazji odpowiedź na pytanie czemu ja zawsze dostaję tak dużo spamu na moją skrzynkę? – otóż dlatego:

W trakcie rejestracji konta aby mieć skrzynkę za darmo, należy zaznaczyć odpowiednią zgodę, lecz ludzie z reguły nie czytają tego i klikają opcję na samej górze. To powoduje, że Onet.pl i ich partnerzy będą za Waszym przyzwoleniem wysyłać do Was spam. Po kliknięciu Załóż konto jednak przekonuje się, że się myliłem:

Ponadto ich oferta cenowa ze skrzynkami dla prywatnych użytkowników to żart w 2020 roku (np. GMail daje to za darmo (nie do końca, bo mogą zbierać dane o użytkownikach, ale funkcjonalnie i bez spamu za darmo)). Inna rzecz, która mnie zaskoczyła to to, że mogłem zarejestrować konto z jednym z najprostszych haseł słownikowych: Zaq12wsx!.

Z serwera WP.pl na serwer GMail

W WP.pl jest ta sama śpiewka, co w Onet.pl z mailami marketingowymi i tym, że da się założyć konto z hasłem Zaq12wsx!, ale przynajmniej Ci zaznaczyli, że te hasło jest kiepskie:

Tutaj podobnie jak w GMail synchronizacja po IMAP jest domyślnie wyłączona, trzeba ją włączyć:

Host2 failure: Error login on [imap.wp.pl] with user [test@wp.pl] auth [LOGIN]: 2 NO Wybrany kanal dostepu nalezy aktywowac w intefejsie WWW
Exiting with return value 16 (EXIT_AUTHENTICATION_FAILURE)
./imapsync --host1 imap.wp.pl --user1 test@wp.pl --password1 "password123" --host2 imap.gmail.com --port2 993 --user2 test@gmail.com --password2 "password123" --ssl1 -ssl2

Z serwera Gazeta.pl na serwer GMail

Tutaj spamik ponownie, ale tym razem da się wyłączyć:

Jednak nie zaznaczyło „powyższej” opcji:

Co ciekawe, wg Gazeta.pl Zaq12wsx! to mocne hasło:

Tutaj jedynie SMTP jest wyłączony (uwaga, gdyby ktoś z tej skrzynki chciał korzystać w Outlooku czy innym kliencie pocztowym). IMAP jest włączony, więc od razu można puścić synchronizację:

./imapsync --host1 imap.gazeta.pl --user1 test@gazeta.pl --password1 "password123" --host2 imap.gmail.com --port2 993 --user2 test@gmail.com --password2 "password123" --ssl1 -ssl2

Z serwera o2.pl na serwer GMail

Interfejs jest identyczny jak ten z WP.pl, te same zgody, te same hasło:

Tak samo jak na WP.pl odpalamy IMAPa:

./imapsync --host1 poczta.o2.pl --user1 test@o2.pl --password1 "password123" --host2 imap.gmail.com --port2 993 --user2 test@gmail.com --password2 "password123" --ssl1 -ssl2

Z własnego serwera na Exchange Online

./imapsync --host1 ssl0.ovh.net --port1 993 --user1 test@test.com --password1 "password123" --host2 outlook.office365.com --user2 test@test.onmicrosoft.com --password2 "password123" --ssl1 -ssl2

Przykład wyniku synchronizacji małej skrzynki:

supra@supra-pc:/mnt/r/supra/Pobrane/imapsync-imapsync-1.945$ ./imapsync --host1 ssl0.ovh.net --port1 993 --user1 test@test.com --password1 "password123" --host2 imap.poczta.onet.pl --user2 test@onet.pl --password2 "password123"
--ssl1 -ssl2
Here is imapsync 1.945 on host supra-pc, a linux system with 16.5/63.9 free GiB of RAM
with Perl 5.26.1 and Mail::IMAPClient 3.42
Transfer started at Thu Jul 23 08:12:33 2020
PID is 38 my PPID is 8
Log file is LOG_imapsync/2020_07_23_08_12_33_744_test@test.com_test@onet.pl.txt ( to change it, use --logfile path ; or use --nolog to turn off logging )
Load is 0.52 0.58 0.59 1/5 on 16 cores
Current directory is /mnt/r/supra/Pobrane/imapsync-imapsync-1.945
Real user id is supra (uid 1000)
Effective user id is supra (euid 1000)
$RCSfile: imapsync,v $ $Revision: 1.945 $ $Date: 2019/06/26 19:30:56 $
Command line used, run by /usr/bin/perl:
./imapsync --host1 ssl0.ovh.net --port1 993 --user1 test@test.com --password1 MASKED --host2 imap.poczta.onet.pl --user2 test@onet.pl --password2 MASKED --ssl1 -ssl2
Temp directory is /tmp ( to change it use --tmpdir dirpath )
kill -QUIT 38 # special behavior: call to sub catch_exit
kill -TERM 38 # special behavior: call to sub catch_exit
kill -INT 38 # special behavior: call to sub catch_reconnect
kill -HUP 38 # special behavior: call to sub catch_print
kill -USR1 38 # special behavior: call to sub toggle_sleep
File /tmp/imapsync.pid does not exist
PID file is /tmp/imapsync.pid ( to change it, use --pidfile filepath ; to avoid it use --pidfile "" )
Writing my PID 38 in /tmp/imapsync.pid
Writing also my logfile name in /tmp/imapsync.pid : LOG_imapsync/2020_07_23_08_12_33_744_test@test.com_test@onet.pl.txt
Modules version list:
Authen::NTLM         1.09
CGI                  4.49
Compress::Zlib       2.074
Crypt::OpenSSL::RSA  0.28
Data::Uniqid         0.12
Digest::HMAC_MD5     1.01
Digest::HMAC_SHA1    1.03
Digest::MD5          2.55
File::Copy::Recursive 0.40
File::Spec           3.67
Getopt::Long         2.49
HTML::Entities       3.69
IO::Socket           1.38
IO::Socket::INET     1.35
IO::Socket::INET6    2.72
IO::Socket::IP       0.38
IO::Socket::SSL      2.060
IO::Tee              0.65
JSON                 4.02
JSON::WebToken       0.10
LWP                  6.31
Mail::IMAPClient     3.42
Net::Ping            2.55
Net::SSLeay          1.84
Term::ReadKey        2.37
Test::MockObject     1.20161202
Time::HiRes          1.9741
URI::Escape          3.31
Unicode::String      2.10
( use --no-modulesversion to turn off printing this Perl modules list )
Info: will resync flags for already transferred messages. Use --noresyncflags to not resync flags.
SSL debug mode level is --debugssl 1 (can be set from 0 meaning no debug to 4 meaning max debug)
Host1: SSL default mode is like --sslargs1 "SSL_verify_mode=0", meaning for host1 SSL_VERIFY_NONE, ie, do not check the certificate server.
Host1: Use --sslargs1 SSL_verify_mode=1 to have SSL_VERIFY_PEER, ie, check the certificate server of host1
Host2: SSL default mode is like --sslargs2 "SSL_verify_mode=0", meaning for host2 SSL_VERIFY_NONE, ie, do not check the certificate server.
Host2: Use --sslargs2 SSL_verify_mode=1 to have SSL_VERIFY_PEER, ie, check the certificate server of host2
Info: turned ON syncinternaldates, will set the internal dates (arrival dates) on host2 same as host1.
Host1: will try to use LOGIN authentication on host1
Host2: will try to use LOGIN authentication on host2
Host1: imap connection timeout is 120 seconds
Host2: imap connection timeout is 120 seconds
Host1: IMAP server [ssl0.ovh.net] port [993] user [test@test.com]
Host2: IMAP server [imap.poczta.onet.pl] port [993] user [test@onet.pl]
Host1: connecting and login on host1 [ssl0.ovh.net] port [993] with user [test@test.com]
Host1 IP address: 193.70.18.144
Host1 banner: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Dovecot on host 103 ready
Host1 capability before authentication: IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN AUTH
Host1: ssl0.ovh.net says it has CAPABILITY for AUTHENTICATE LOGIN
Host1: success login on [ssl0.ovh.net] with user [test@test.com] auth [LOGIN]
Host2: connecting and login on host2 [imap.poczta.onet.pl] port [993] with user [test@onet.pl]
Host2 IP address: 213.180.147.154
Host2 banner: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID SORT SORT=DISPLAY MULTIAPPEND UNSELECT CHILDREN UIDPLUS LIST-STATUS LIST-EXTENDED I18NLEVEL=1 SEARCHRES WITHIN AUTH=PLAIN AUTH=LOGIN AUTH=XOAUTH2] Onet server ready.
Host2 capability before authentication: IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID SORT SORT=DISPLAY MULTIAPPEND UNSELECT CHILDREN UIDPLUS LIST-STATUS LIST-EXTENDED I18NLEVEL=1 SEARCHRES WITHIN AUTH=PLAIN AUTH=LOGIN AUTH=XOAUTH2 I18NLEVEL AUTH
Host2: imap.poczta.onet.pl says it has CAPABILITY for AUTHENTICATE LOGIN
Host2: success login on [imap.poczta.onet.pl] with user [test@onet.pl] auth [LOGIN]
Host1: state Authenticated
Host2: state Authenticated
Host1 capability once authenticated: IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE QUOTA THREAD I18NLEVEL CONTEXT
Host2 capability once authenticated: IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID SORT SORT=DISPLAY MULTIAPPEND UNSELECT CHILDREN UIDPLUS LIST-STATUS LIST-EXTENDED I18NLEVEL=1 SEARCHRES WITHIN I18NLEVEL

Host1: found ID capability. Sending/receiving ID, presented in raw IMAP for now.
In order to avoid sending/receiving ID, use option --noid
Sending: 4 ID ("name" "imapsync" "version" "1.945" "os" "linux" "vendor" "Gilles LAMIRAL" "support-url" "https://imapsync.lamiral.info/" "date" "26-Jun-2019 19:30:56 +0000" "side" "host1")
Sent 181 bytes
Read:   * ID ("name" "Dovecot")
        4 OK ID completed (0.000 + 0.000 secs).


Host2: found ID capability. Sending/receiving ID, presented in raw IMAP for now.
In order to avoid sending/receiving ID, use option --noid
Sending: 4 ID ("name" "imapsync" "version" "1.945" "os" "linux" "vendor" "Gilles LAMIRAL" "support-url" "https://imapsync.lamiral.info/" "date" "26-Jun-2019 19:30:56 +0000" "side" "host2")
Sent 181 bytes
Read:   * ID ("name" "NIL")
        4 OK ID completed (0.001 + 0.000 secs).

Host1: found 13 folders.
Host2: found 8 folders.
Host1: guessing separator from folder listing: [.]
Host1: separator given by NAMESPACE: [.]
Host2: guessing separator from folder listing: [/]
Host2: No NAMESPACE capability, so using guessed separator [/]
You can set the separator character with the --sep2 option,
the complete listing of folders may help you to find it
[Powiadomienia]
[Oferty]
[Spo&AUI-eczno&AVs-ci]
[Drafts]
[Junk]
[Sent]
[Trash]
[INBOX]
Host1: guessing prefix from folder listing: [INBOX.]
Host1: prefix given by NAMESPACE: [INBOX.]
Host2: guessing prefix from folder listing: []
Host2: No NAMESPACE capability so using guessed prefix []
You can set the prefix namespace with the --prefix2 option,
the folowing listing of folders may help you to find it:
[Powiadomienia]
[Oferty]
[Spo&AUI-eczno&AVs-ci]
[Drafts]
[Junk]
[Sent]
[Trash]
[INBOX]
Host1: separator and prefix: [.][INBOX.]
Host2: separator and prefix: [/][]
Including all folders found by default. Use --subscribed or --folder or --folderrec or --include to select specific folders. Use --exclude to unselect specific folders.
Host1: Checking wanted folders exist. Use --nocheckfoldersexist to avoid this check (shared of public namespace targeted).
Host1: Checking wanted folders are selectable. Use --nocheckselectable to avoid this check.
Turned off automapping folders ( use --automap to turn on automapping )

++++ Listing folders
All foldernames are presented between brackets like [X] where X is the foldername.
When a foldername contains non-ASCII characters it is presented in the form
[X] = [Y] where
X is the imap foldername you have to use in command line options and
Y is the utf8 output just printed for convenience, to recognize it.

Host1: folders list (first the raw imap format then the [X] = [Y]):
* LIST (\HasChildren) "." INBOX
* LIST (\HasNoChildren) "." "INBOX.ESET Antispam"
* LIST (\HasNoChildren) "." INBOX.INBOX.Sent
* LIST (\HasNoChildren) "." INBOX.INBOX.Junk
* LIST (\HasNoChildren) "." INBOX.INBOX.Drafts
* LIST (\HasNoChildren) "." INBOX.INBOX.Trash
* LIST (\HasNoChildren) "." INBOX.Trash
* LIST (\HasNoChildren) "." INBOX.Wiadomo&AVs-ci-&AVs-mieci
* LIST (\HasNoChildren) "." "INBOX.Elementy wys&AUI-ane"
* LIST (\HasNoChildren) "." INBOX.Sent
* LIST (\HasNoChildren) "." "INBOX.Elementy usuni&ARk-te"
* LIST (\HasNoChildren) "." "INBOX.Wersje robocze"
* LIST (\HasNoChildren) "." "INBOX.Wykryte elementy"
22 OK List completed (0.000 + 0.000 secs).

[INBOX]
[INBOX.ESET Antispam]
[INBOX.Elementy usuni&ARk-te] = [INBOX.Elementy usunięte]
[INBOX.Elementy wys&AUI-ane] = [INBOX.Elementy wysłane]
[INBOX.INBOX.Drafts]
[INBOX.INBOX.Junk]
[INBOX.INBOX.Sent]
[INBOX.INBOX.Trash]
[INBOX.Sent]
[INBOX.Trash]
[INBOX.Wersje robocze]
[INBOX.Wiadomo&AVs-ci-&AVs-mieci] = [INBOX.Wiadomości-śmieci]
[INBOX.Wykryte elementy]

Host2: folders list (first the raw imap format then the [X] = [Y]):
* LIST (\NoInferiors) "/" Powiadomienia
* LIST (\NoInferiors) "/" Oferty
* LIST (\NoInferiors) "/" Spo&AUI-eczno&AVs-ci
* LIST (\NoInferiors) "/" Drafts
* LIST (\NoInferiors) "/" Junk
* LIST (\NoInferiors) "/" Sent
* LIST (\NoInferiors) "/" Trash
* LIST (\NoInferiors) "/" INBOX
9 OK List completed (0.001 + 0.000 secs).

[Drafts]
[INBOX]
[Junk]
[Oferty]
[Powiadomienia]
[Sent]
[Spo&AUI-eczno&AVs-ci] = [Społeczności]
[Trash]

Folders in host2 not in host1:
[Spo&AUI-eczno&AVs-ci] = [Społeczności]
[Powiadomienia]
[Oferty]
[Junk]
[Drafts]


Folders sizes before the synchronization.
You can remove foldersizes listings by using "--nofoldersizes" and "--nofoldersizesatend"
but then you will also lose the ETA (Estimation Time of Arrival) given after each message copy.
++++ Calculating sizes of 13 folders on Host1
Host1 folder    1/13 [INBOX]                             Size:     42026 Messages:     8 Biggest:      7928
Host1 folder    2/13 [INBOX.ESET Antispam]               Size:         0 Messages:     0 Biggest:         0
Host1 folder    3/13 [INBOX.Elementy usuni&ARk-te] = [INBOX.Elementy usunięte] Size:         0 Messages:     0 Biggest:         0
Host1 folder    4/13 [INBOX.Elementy wys&AUI-ane] = [INBOX.Elementy wysłane] Size:      3211 Messages:     1 Biggest:      3211
Host1 folder    5/13 [INBOX.INBOX.Drafts]                Size:         0 Messages:     0 Biggest:         0
Host1 folder    6/13 [INBOX.INBOX.Junk]                  Size:         0 Messages:     0 Biggest:         0
Host1 folder    7/13 [INBOX.INBOX.Sent]                  Size:       663 Messages:     1 Biggest:       663
Host1 folder    8/13 [INBOX.INBOX.Trash]                 Size:         0 Messages:     0 Biggest:         0
Host1 folder    9/13 [INBOX.Sent]                        Size:         0 Messages:     0 Biggest:         0
Host1 folder   10/13 [INBOX.Trash]                       Size:      5718 Messages:     1 Biggest:      5718
Host1 folder   11/13 [INBOX.Wersje robocze]              Size:         0 Messages:     0 Biggest:         0
Host1 folder   12/13 [INBOX.Wiadomo&AVs-ci-&AVs-mieci] = [INBOX.Wiadomości-śmieci] Size:         0 Messages:     0 Biggest:         0
Host1 folder   13/13 [INBOX.Wykryte elementy]            Size:         0 Messages:     0 Biggest:         0
Host1 Nb folders:               13 folders
Host1 Nb messages:              11 messages
Host1 Total size:            51618 bytes (50.408 KiB)
Host1 Biggest message:        7928 bytes (7.742 KiB)
Host1 Time spent:              3.7 seconds
++++ Calculating sizes of 13 folders on Host2
Host2 folder    1/13 [ESET Antispam]                     does not exist yet
Host2 folder    2/13 [Elementy usuni&ARk-te] = [Elementy usunięte] does not exist yet
Host2 folder    3/13 [Elementy wys&AUI-ane] = [Elementy wysłane] does not exist yet
Host2 folder    4/13 [INBOX]                             Size:    286065 Messages:     2 Biggest:    231514
Host2 folder    5/13 [INBOX/Drafts]                      does not exist yet
Host2 folder    6/13 [INBOX/Junk]                        does not exist yet
Host2 folder    7/13 [INBOX/Sent]                        does not exist yet
Host2 folder    8/13 [INBOX/Trash]                       does not exist yet
Host2 folder    9/13 [Sent]                              Size:         0 Messages:     0 Biggest:         0
Host2 folder   10/13 [Trash]                             Size:         0 Messages:     0 Biggest:         0
Host2 folder   11/13 [Wersje robocze]                    does not exist yet
Host2 folder   12/13 [Wiadomo&AVs-ci-&AVs-mieci] = [Wiadomości-śmieci] does not exist yet
Host2 folder   13/13 [Wykryte elementy]                  does not exist yet
Host2 Nb folders:               13 folders
Host2 Nb messages:               2 messages
Host2 Total size:           286065 bytes (279.360 KiB)
Host2 Biggest message:      231514 bytes (226.088 KiB)
Host2 Time spent:              0.1 seconds
++++ Looping on each one of 13 folders to sync
Folder    1/13 [INBOX]                             -> [INBOX]
Host1: folder [INBOX] has 8 messages in total (mentioned by SELECT)
Host2: folder [INBOX] has 2 messages in total (mentioned by SELECT)
Host2: folder [INBOX] permanentflags:
Host1: folder [INBOX] considering 8 messages
Host2: folder [INBOX] considering 2 messages
Host1: folder [INBOX] selected 8 messages, duplicates 0
Host2: INBOX/1 size 54569 ignored (no wanted headers so we ignore this message)
Host2: folder [INBOX] selected 2 messages, duplicates 0
msg INBOX/1 {6599}            copied to INBOX/3          1.00 msgs/s  6.444 KiB/s 6.444 KiB copied ETA: Thu Jul 23 08:12:48 2020  10 s  10/11 msgs left
msg INBOX/2 {4128}            copied to INBOX/4          2.00 msgs/s  10.476 KiB/s 10.476 KiB copied ETA: Thu Jul 23 08:12:42 2020  4 s  9/11 msgs left
msg INBOX/4 {4152}            copied to INBOX/5          3.00 msgs/s  14.530 KiB/s 14.530 KiB copied ETA: Thu Jul 23 08:12:41 2020  3 s  8/11 msgs left
msg INBOX/5 {4711}            copied to INBOX/6          3.87 msgs/s  18.503 KiB/s 19.131 KiB copied ETA: Thu Jul 23 08:12:40 2020  2 s  7/11 msgs left
msg INBOX/6 {5690}            copied to INBOX/7          4.22 msgs/s  20.858 KiB/s 24.688 KiB copied ETA: Thu Jul 23 08:12:40 2020  1 s  6/11 msgs left
msg INBOX/7 {3635}            copied to INBOX/8          4.42 msgs/s  20.812 KiB/s 28.237 KiB copied ETA: Thu Jul 23 08:12:40 2020  1 s  5/11 msgs left
msg INBOX/8 {7928}            copied to INBOX/9          4.65 msgs/s  23.916 KiB/s 35.979 KiB copied ETA: Thu Jul 23 08:12:39 2020  1 s  4/11 msgs left
msg INBOX/9 {5183}            copied to INBOX/10         4.81 msgs/s  24.685 KiB/s 41.041 KiB copied ETA: Thu Jul 23 08:12:39 2020  1 s  3/11 msgs left
Folder    2/13 [INBOX.ESET Antispam]               -> [ESET Antispam]
Host1: folder [INBOX.ESET Antispam] has 0 messages in total (mentioned by SELECT)
Creating folder [ESET Antispam] on host2
Created folder [ESET Antispam] on host2
Host2: folder [ESET Antispam] has 0 messages in total (mentioned by SELECT)
Host2: folder [ESET Antispam] permanentflags:
Host2: Subscribing to folder ESET Antispam
Host1: folder [INBOX.ESET Antispam] considering 0 messages
Host2: folder [ESET Antispam] considering 0 messages
Host1: folder [INBOX.ESET Antispam] selected 0 messages, duplicates 0
Host2: folder [ESET Antispam] selected 0 messages, duplicates 0
Folder    3/13 [INBOX.Elementy usuni&ARk-te] = [INBOX.Elementy usunięte] -> [Elementy usuni&ARk-te] = [Elementy usunięte]
Host1: folder [INBOX.Elementy usuni&ARk-te] has 0 messages in total (mentioned by SELECT)
Creating folder [Elementy usuni&ARk-te] on host2
Folder [Elementy usuni&ARk-te] already exists (--nomixfolders is not set)
Host2: folder [Elementy usuni&ARk-te] has 0 messages in total (mentioned by SELECT)
Host2: folder [Elementy usuni&ARk-te] permanentflags:
Host2: Subscribing to folder Elementy usuni&ARk-te
Host1: folder [INBOX.Elementy usuni&ARk-te] considering 0 messages
Host2: folder [Elementy usuni&ARk-te] considering 0 messages
Host1: folder [INBOX.Elementy usuni&ARk-te] selected 0 messages, duplicates 0
Host2: folder [Elementy usuni&ARk-te] selected 0 messages, duplicates 0
Folder    4/13 [INBOX.Elementy wys&AUI-ane] = [INBOX.Elementy wysłane] -> [Elementy wys&AUI-ane] = [Elementy wysłane]
Host1: folder [INBOX.Elementy wys&AUI-ane] has 1 messages in total (mentioned by SELECT)
Creating folder [Elementy wys&AUI-ane] on host2
Folder [Elementy wys&AUI-ane] already exists (--nomixfolders is not set)
Host2: folder [Elementy wys&AUI-ane] has 0 messages in total (mentioned by SELECT)
Host2: folder [Elementy wys&AUI-ane] permanentflags:
Host2: Subscribing to folder Elementy wys&AUI-ane
Host1: folder [INBOX.Elementy wys&AUI-ane] considering 1 messages
Host2: folder [Elementy wys&AUI-ane] considering 0 messages
Host1: folder [INBOX.Elementy wys&AUI-ane] selected 1 messages, duplicates 0
Host2: folder [Elementy wys&AUI-ane] selected 0 messages, duplicates 0
msg INBOX.Elementy wys&AUI-ane/1 {3211}            copied to Elementy wys&AUI-ane/1          3.55 msgs/s  17.422 KiB/s 44.177 KiB copied ETA: Thu Jul 23 08:12:40 2020  1 s  2/11 msgs left
Folder    5/13 [INBOX.INBOX.Drafts]                -> [INBOX/Drafts]
Host1: folder [INBOX.INBOX.Drafts] has 0 messages in total (mentioned by SELECT)
Creating folder [INBOX/Drafts] on host2
Created folder [INBOX/Drafts] on host2
Host2 folder INBOX/Drafts: Could not select: 54 NO Mailbox doesn't exist: INBOX/Drafts (0.003 + 0.000 + 0.002 secs).
Creating folder [INBOX/Drafts] on host2
Created folder [INBOX/Drafts] on host2
Host2 folder INBOX/Drafts: Could not select: 58 NO Mailbox doesn't exist: INBOX/Drafts (0.003 + 0.000 + 0.002 secs).
Folder    6/13 [INBOX.INBOX.Junk]                  -> [INBOX/Junk]
Host1: folder [INBOX.INBOX.Junk] has 0 messages in total (mentioned by SELECT)
Creating folder [INBOX/Junk] on host2
Created folder [INBOX/Junk] on host2
Host2 folder INBOX/Junk: Could not select: 62 NO Mailbox doesn't exist: INBOX/Junk (0.003 + 0.000 + 0.002 secs).
Creating folder [INBOX/Junk] on host2
Created folder [INBOX/Junk] on host2
Host2 folder INBOX/Junk: Could not select: 66 NO Mailbox doesn't exist: INBOX/Junk (0.002 + 0.000 + 0.001 secs).
Folder    7/13 [INBOX.INBOX.Sent]                  -> [INBOX/Sent]
Host1: folder [INBOX.INBOX.Sent] has 1 messages in total (mentioned by SELECT)
Creating folder [INBOX/Sent] on host2
Created folder [INBOX/Sent] on host2
Host2 folder INBOX/Sent: Could not select: 70 NO Mailbox doesn't exist: INBOX/Sent (0.002 + 0.000 + 0.001 secs).
Creating folder [INBOX/Sent] on host2
Created folder [INBOX/Sent] on host2
Host2 folder INBOX/Sent: Could not select: 74 NO Mailbox doesn't exist: INBOX/Sent (0.002 + 0.000 + 0.001 secs).
Folder    8/13 [INBOX.INBOX.Trash]                 -> [INBOX/Trash]
Host1: folder [INBOX.INBOX.Trash] has 0 messages in total (mentioned by SELECT)
Creating folder [INBOX/Trash] on host2
Created folder [INBOX/Trash] on host2
Host2 folder INBOX/Trash: Could not select: 78 NO Mailbox doesn't exist: INBOX/Trash (0.002 + 0.000 + 0.001 secs).
Creating folder [INBOX/Trash] on host2
Created folder [INBOX/Trash] on host2
Host2 folder INBOX/Trash: Could not select: 82 NO Mailbox doesn't exist: INBOX/Trash (0.002 + 0.000 + 0.001 secs).
Folder    9/13 [INBOX.Sent]                        -> [Sent]
Host1: folder [INBOX.Sent] has 0 messages in total (mentioned by SELECT)
Host2: folder [Sent] has 1 messages in total (mentioned by SELECT)
Host2: folder [Sent] permanentflags:
Host1: folder [INBOX.Sent] considering 0 messages
Host2: folder [Sent] considering 1 messages
Host1: folder [INBOX.Sent] selected 0 messages, duplicates 0
Host2: folder [Sent] selected 1 messages, duplicates 0
Folder   10/13 [INBOX.Trash]                       -> [Trash]
Host1: folder [INBOX.Trash] has 1 messages in total (mentioned by SELECT)
Host2: folder [Trash] has 0 messages in total (mentioned by SELECT)
Host2: folder [Trash] permanentflags:
Host1: folder [INBOX.Trash] considering 1 messages
Host2: folder [Trash] considering 0 messages
Host1: folder [INBOX.Trash] selected 1 messages, duplicates 0
Host2: folder [Trash] selected 0 messages, duplicates 0
msg INBOX.Trash/1 {5718}            copied to Trash/1          2.53 msgs/s  12.601 KiB/s 49.761 KiB copied ETA: Thu Jul 23 08:12:41 2020  0 s  1/11 msgs left
Folder   11/13 [INBOX.Wersje robocze]              -> [Wersje robocze]
Host1: folder [INBOX.Wersje robocze] has 0 messages in total (mentioned by SELECT)
Creating folder [Wersje robocze] on host2
Created folder [Wersje robocze] on host2
Host2: folder [Wersje robocze] has 0 messages in total (mentioned by SELECT)
Host2: folder [Wersje robocze] permanentflags:
Host2: Subscribing to folder Wersje robocze
Host1: folder [INBOX.Wersje robocze] considering 0 messages
Host2: folder [Wersje robocze] considering 0 messages
Host1: folder [INBOX.Wersje robocze] selected 0 messages, duplicates 0
Host2: folder [Wersje robocze] selected 0 messages, duplicates 0
Folder   12/13 [INBOX.Wiadomo&AVs-ci-&AVs-mieci] = [INBOX.Wiadomości-śmieci] -> [Wiadomo&AVs-ci-&AVs-mieci] = [Wiadomości-śmieci]
Host1: folder [INBOX.Wiadomo&AVs-ci-&AVs-mieci] has 0 messages in total (mentioned by SELECT)
Creating folder [Wiadomo&AVs-ci-&AVs-mieci] on host2
Folder [Wiadomo&AVs-ci-&AVs-mieci] already exists (--nomixfolders is not set)
Host2: folder [Wiadomo&AVs-ci-&AVs-mieci] has 0 messages in total (mentioned by SELECT)
Host2: folder [Wiadomo&AVs-ci-&AVs-mieci] permanentflags:
Host2: Subscribing to folder Wiadomo&AVs-ci-&AVs-mieci
Host1: folder [INBOX.Wiadomo&AVs-ci-&AVs-mieci] considering 0 messages
Host2: folder [Wiadomo&AVs-ci-&AVs-mieci] considering 0 messages
Host1: folder [INBOX.Wiadomo&AVs-ci-&AVs-mieci] selected 0 messages, duplicates 0
Host2: folder [Wiadomo&AVs-ci-&AVs-mieci] selected 0 messages, duplicates 0
Folder   13/13 [INBOX.Wykryte elementy]            -> [Wykryte elementy]
Host1: folder [INBOX.Wykryte elementy] has 0 messages in total (mentioned by SELECT)
Creating folder [Wykryte elementy] on host2
Created folder [Wykryte elementy] on host2
Host2: folder [Wykryte elementy] has 0 messages in total (mentioned by SELECT)
Host2: folder [Wykryte elementy] permanentflags:
Host2: Subscribing to folder Wykryte elementy
Host1: folder [INBOX.Wykryte elementy] considering 0 messages
Host2: folder [Wykryte elementy] considering 0 messages
Host1: folder [INBOX.Wykryte elementy] selected 0 messages, duplicates 0
Host2: folder [Wykryte elementy] selected 0 messages, duplicates 0
++++ End looping on each folder

Folders sizes after the synchronization.
You can remove this foldersizes listing by using  "--nofoldersizesatend"
++++ Calculating sizes of 13 folders on Host1
Host1 folder    1/13 [INBOX]                             Size:     42026 Messages:     8 Biggest:      7928
Host1 folder    2/13 [INBOX.ESET Antispam]               Size:         0 Messages:     0 Biggest:         0
Host1 folder    3/13 [INBOX.Elementy usuni&ARk-te] = [INBOX.Elementy usunięte] Size:         0 Messages:     0 Biggest:         0
Host1 folder    4/13 [INBOX.Elementy wys&AUI-ane] = [INBOX.Elementy wysłane] Size:      3211 Messages:     1 Biggest:      3211
Host1 folder    5/13 [INBOX.INBOX.Drafts]                Size:         0 Messages:     0 Biggest:         0
Host1 folder    6/13 [INBOX.INBOX.Junk]                  Size:         0 Messages:     0 Biggest:         0
Host1 folder    7/13 [INBOX.INBOX.Sent]                  Size:       663 Messages:     1 Biggest:       663
Host1 folder    8/13 [INBOX.INBOX.Trash]                 Size:         0 Messages:     0 Biggest:         0
Host1 folder    9/13 [INBOX.Sent]                        Size:         0 Messages:     0 Biggest:         0
Host1 folder   10/13 [INBOX.Trash]                       Size:      5718 Messages:     1 Biggest:      5718
Host1 folder   11/13 [INBOX.Wersje robocze]              Size:         0 Messages:     0 Biggest:         0
Host1 folder   12/13 [INBOX.Wiadomo&AVs-ci-&AVs-mieci] = [INBOX.Wiadomości-śmieci] Size:         0 Messages:     0 Biggest:         0
Host1 folder   13/13 [INBOX.Wykryte elementy]            Size:         0 Messages:     0 Biggest:         0
Host1 Nb folders:               13 folders
Host1 Nb messages:              11 messages
Host1 Total size:            51618 bytes (50.408 KiB)
Host1 Biggest message:        7928 bytes (7.742 KiB)
Host1 Time spent:              1.5 seconds
++++ Calculating sizes of 13 folders on Host2
Host2 folder    1/13 [ESET Antispam]                     Size:         0 Messages:     0 Biggest:         0
Host2 folder    2/13 [Elementy usuni&ARk-te] = [Elementy usunięte] does not exist yet
Host2 folder    3/13 [Elementy wys&AUI-ane] = [Elementy wysłane] does not exist yet
Host2 folder    4/13 [INBOX]                             Size:    328475 Messages:    10 Biggest:    231514
Host2 folder    5/13 [INBOX/Drafts]                      does not exist yet
Host2 folder    6/13 [INBOX/Junk]                        does not exist yet
Host2 folder    7/13 [INBOX/Sent]                        does not exist yet
Host2 folder    8/13 [INBOX/Trash]                       does not exist yet
Host2 folder    9/13 [Sent]                              Size:      3259 Messages:     1 Biggest:      3259
Host2 folder   10/13 [Trash]                             Size:      5766 Messages:     1 Biggest:      5766
Host2 folder   11/13 [Wersje robocze]                    Size:         0 Messages:     0 Biggest:         0
Host2 folder   12/13 [Wiadomo&AVs-ci-&AVs-mieci] = [Wiadomości-śmieci] does not exist yet
Host2 folder   13/13 [Wykryte elementy]                  Size:         0 Messages:     0 Biggest:         0
Host2 Nb folders:               13 folders
Host2 Nb messages:              12 messages
Host2 Total size:           337500 bytes (329.590 KiB)
Host2 Biggest message:      231514 bytes (226.088 KiB)
Host2 Time spent:              0.2 seconds
++++ Statistics
Transfer started on                     : Thu Jul 23 08:12:33 2020
Transfer ended on                       : Thu Jul 23 08:12:43 2020
Transfer time                           : 10.1 sec
Folders synced                          : 13/13 synced
Messages transferred                    : 10
Messages skipped                        : 0
Messages found duplicate on host1       : 0
Messages found duplicate on host2       : 0
Messages found crossduplicate on host2  : 0
Messages void (noheader) on host1       : 0
Messages void (noheader) on host2       : 1
Messages found in host1 not in host2    : 0 messages
Messages found in host2 not in host1    : 1 messages
Messages deleted on host1               : 0
Messages deleted on host2               : 0
Total bytes transferred                 : 50955 (49.761 KiB)
Total bytes skipped                     : 0 (0.000 KiB)
Message rate                            : 1.0 messages/s
Average bandwidth rate                  : 4.9 KiB/s
Reconnections to host1                  : 0
Reconnections to host2                  : 0
Memory consumption at the end           : 188.4 MiB (started with 170.5 MiB)
Load end is                             : 0.52 0.58 0.59 1/5 on 16 cores
Biggest message                         : 7928 bytes (7.742 KiB)
Memory/biggest message ratio            : 24916.5
Start difference host2 - host1          : -9 messages, 234447 bytes (228.952 KiB)
Final difference host2 - host1          : 1 messages, 285882 bytes (279.182 KiB)
The sync looks good, all 10 identified messages in host1 are on host2.
The sync is not strict, there are 1 messages in host2 that are not on host1. Use --delete2 to delete them and have a strict sync.
Detected 8 errors

Check if a new imapsync release is available by adding --releasecheck
Homepage: https://imapsync.lamiral.info/
++++ Listing 8 errors encountered during the sync ( avoid this listing with --noerrorsdump ).
Err 1/8: Host2 folder INBOX/Drafts: Could not select: 54 NO Mailbox doesn't exist: INBOX/Drafts (0.003 + 0.000 + 0.002 secs).
Err 2/8: Host2 folder INBOX/Drafts: Could not select: 58 NO Mailbox doesn't exist: INBOX/Drafts (0.003 + 0.000 + 0.002 secs).
Err 3/8: Host2 folder INBOX/Junk: Could not select: 62 NO Mailbox doesn't exist: INBOX/Junk (0.003 + 0.000 + 0.002 secs).
Err 4/8: Host2 folder INBOX/Junk: Could not select: 66 NO Mailbox doesn't exist: INBOX/Junk (0.002 + 0.000 + 0.001 secs).
Err 5/8: Host2 folder INBOX/Sent: Could not select: 70 NO Mailbox doesn't exist: INBOX/Sent (0.002 + 0.000 + 0.001 secs).
Err 6/8: Host2 folder INBOX/Sent: Could not select: 74 NO Mailbox doesn't exist: INBOX/Sent (0.002 + 0.000 + 0.001 secs).
Err 7/8: Host2 folder INBOX/Trash: Could not select: 78 NO Mailbox doesn't exist: INBOX/Trash (0.002 + 0.000 + 0.001 secs).
Err 8/8: Host2 folder INBOX/Trash: Could not select: 82 NO Mailbox doesn't exist: INBOX/Trash (0.002 + 0.000 + 0.001 secs).
Exiting with return value 111 (EXIT_WITH_ERRORS)
Log file is LOG_imapsync/2020_07_23_08_12_33_744_test@test.com_test@onet.pl.txt ( to change it, use --logfile filepath ; or use --nolog to turn off logging )

Nie znalazłem rozwiązania na błędy, które pojawiają się na samym końcu, więc jeśli ktoś zna rozwiązanie – chętnie o tym posłucham.

Exchange i przenoszenie wielu skrzynek na inny serwer

Tutaj sprawa jest nieco skomplikowana: Exchange domyślnie nie obsługuje IMAPa, to znaczy ta funkcja jest wyłączona. Trzeba ją włączyć i skonfigurować dla użytkowników. Jeśli chodzi o synchronizację wielu użytkowników – niczym się nie różni w stosunku tego, co jest powyżej, poza tym, że robimy to dla wielu użytkowników i czytamy loginy i hasła kont źródłowych i docelowych z pliku CSV. Testy robiłem na Exchange 2019 i do niego będę się odnosił. Nazwa serwera mailowego to mail.serba.website. Poza tym, co wspomniałem, konta muszą być wcześniej utworzone na docelowym serwerze, na który przenosimy skrzynki.

Instrukcja włączania IMAPa jest tutaj, ale ja ją skrócę – poniższe usługi trzeba włączyć i zmienić ich tryb na Automatyczny:

Następnie należy ustawić adres FQDN dla serwera IMAP Exchange’a:

C:\Windows\system32>Set-ImapSettings -ExternalConnectionSettings "mail.serba.website:993:SSL","mail.serba.website:143:TLS" -X509CertificateName mail.serba.website
WARNING: Changes to IMAP4 settings will only take effect after all Microsoft Exchange IMAP4 services are restarted on server EXCHANGE.

Po tym należy wykonać restart usługi:

[PS] C:\Windows\system32>Restart-Service MSExchangeIMAP4; Restart-Service MSExchangeIMAP4BE
WARNING: Waiting for service 'Microsoft Exchange IMAP4 (MSExchangeIMAP4)' to start...
WARNING: Waiting for service 'Microsoft Exchange IMAP4 (MSExchangeIMAP4)' to start...
WARNING: Waiting for service 'Microsoft Exchange IMAP4 Backend (MSExchangeIMAP4BE)' to start...
WARNING: Waiting for service 'Microsoft Exchange IMAP4 Backend (MSExchangeIMAP4BE)' to start...
[PS] C:\Windows\system32>Get-Service MSExchangeIMAP4; Get-Service MSExchangeIMAP4BE

Status   Name               DisplayName
------   ----               -----------
Running  MSExchangeIMAP4    Microsoft Exchange IMAP4
Running  MSExchangeIMAP4BE  Microsoft Exchange IMAP4 Backend

Po tym IMAP działa, ale nie można zapomnieć o tym, by ten miał ważny certyfikat SSL lub jeśli ma samopodpisany lub nieważny, należy użyć opcji --sslargs2 SSL_verify_mode=0 zakładając, że Exchange jest serwerem na który przenosimy skrzynki.

Następnie należy przygotować skrypt, który wykona nam synchronizację oraz plik CSV zawierający loginy i hasła. CSV wygląda tak (zapisany jako konta.csv):

konto1@test.com;haslo1;apilecki@website;haslo1
konto2@test.com;haslo2;bpoprawa@website;haslo2
konto3@test.com;haslo3;fkluk@website;haslo3

Skrypt wygląda tak:

{ while IFS=';' read  u1 p1 u2 p2; do
/mnt/c/Users/Administrator.SERBA/Desktop/imapsync/imapsync --host1 ssl0.ovh.net --user1 "$u1" --password1 "$p1" --ssl1 --port1 993 \
                             --host2 exchange.serba.local --user2 "$u2" --password2 "$p2" -ssl2
                         done ; } < konta.csv

Oczywiście należy podmienić ścieżkę do imapsync na właściwą wcześniej, po tym zapisujemy skrypt jako sync.sh i wykonujemy polecenie bash sync.sh. Po tym skrzynki się zsynchronizują.

Kwestie wydajnościowe

Według zaleceń twórcy IMAPsynca są kwestie, które trzeba wziąć pod uwagę pod kątem synchronizacji i myślę, przy masowych synchronizacjach warto wziąć pod uwagę. Jeśli mamy dużo kont do synchronizacji to można podzielić plik CSV na mniejsze i odpalić osobne procesy dla każdego pliku CSV – w ten sposób więcej synchronizacji można wykonać w jednym czasie, lecz nie ma dokładnego określenia ile ich ma być. Pozostaje testować. Poza tym, warto takie synchronizacje robić z poziomu źródłowego serwera pocztowego lub z docelowego serwera pocztowego (jeśli to jest w ogóle możliwe). To zapewni nam najlepszą wydajność, na przykład jeśli wysyłamy skrzynkę do Office 365 z lokalnego Exchange, warto taki program odpalić bezpośrednio na Exchange’u (jeśli to w ogóle możliwe),