Here is imapsync 1.977 on host privremena, a linux system with 19.3/31.3 free GiB of RAM with Perl 5.28.1 and Mail::IMAPClient 3.42 Transfer started at Fri Nov 13 22:01:01 2020 PID is 18837 my PPID is 18836 Log file is LOG_imapsync/2020_11_13_22_01_01_755_milan@mediadisplay.rs_milan@mediadisplay.rs.txt ( to change it, use --logfile path ; or use --nolog to turn off logging ) Load is 1.40 0.53 0.37 1/1197 on 2 cores Current directory is /root/imapsync-master Real user id is root (uid 0) Effective user id is root (euid 0) $RCSfile: imapsync,v $ $Revision: 1.977 $ $Date: 2019/12/23 20:18:02 $ Command line used, run by /usr/bin/perl: ./imapsync --addheader --automap --host1 cp1.ulimitserver.com --host2 194.146.57.11 --password1 MASKED --password2 MASKED --user1 milan@mediadisplay.rs --user2 milan@mediadisplay.rs Temp directory is . ( to change it use --tmpdir dirpath ) Under cgi context Umask set with 0077 (was 0022) REMOTE_ADDR is ::ffff:178.218.170.45 HTTP_REFERER is http://148.251.112.220:8080/ HTTP_USER_AGENT is Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0 SERVER_SOFTWARE is ./webserver SERVER_PORT is 8080 HTTP_COOKIE is imapsync_runs=2; 686c9b6492d74d6d7c41621a12c6956f=la6q3dnkojbe6vjjq7boesovf2 kill -QUIT 18837 # special behavior: call to sub catch_exit kill -TERM 18837 # special behavior: call to sub catch_exit kill -INT 18837 # special behavior: call to sub catch_reconnect kill -HUP 18837 # special behavior: call to sub catch_print kill -USR1 18837 # special behavior: call to sub toggle_sleep File ./imapsync_cp1.ulimitserver.com_milan@mediadisplay.rs_194.146.57.11_milan@mediadisplay.rs.pid does not exist Error reading file ./imapsync_cp1.ulimitserver.com_milan@mediadisplay.rs_194.146.57.11_milan@mediadisplay.rs.pid : No such file or directory PID file is ./imapsync_cp1.ulimitserver.com_milan@mediadisplay.rs_194.146.57.11_milan@mediadisplay.rs.pid ( to change it, use --pidfile filepath ; to avoid it use --pidfile "" ) Writing my PID 18837 in ./imapsync_cp1.ulimitserver.com_milan@mediadisplay.rs_194.146.57.11_milan@mediadisplay.rs.pid Writing also my logfile name in ./imapsync_cp1.ulimitserver.com_milan@mediadisplay.rs_194.146.57.11_milan@mediadisplay.rs.pid : LOG_imapsync/2020_11_13_22_01_01_755_milan@mediadisplay.rs_milan@mediadisplay.rs.txt Info: will resync flags for already transferred messages. Use --noresyncflags to not resync flags. Host1: probing ssl on port 993 ( use --nosslcheck to avoid this ssl probe ) Host1: sslcheck detected open ssl port 993 so turning ssl on (use --nossl1 --notls1 to turn off SSL and TLS wizardry) Host2: probing ssl on port 993 ( use --nosslcheck to avoid this ssl probe ) Host2: sslcheck detected open ssl port 993 so turning ssl on (use --nossl2 --notls2 to turn off SSL and TLS wizardry) 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 [cp1.ulimitserver.com] port [993] user [milan@mediadisplay.rs] Host2: IMAP server [194.146.57.11] port [993] user [milan@mediadisplay.rs] Host1: connecting and login on host1 [cp1.ulimitserver.com] port [993] with user [milan@mediadisplay.rs] Host1 IP address: 194.146.59.65 Host1 banner: * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE NAMESPACE LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot ready. Host1 capability before authentication: IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE NAMESPACE LITERAL+ AUTH=PLAIN AUTH=LOGIN AUTH Host1: cp1.ulimitserver.com says it has CAPABILITY for AUTHENTICATE LOGIN Host1: success login on [cp1.ulimitserver.com] with user [milan@mediadisplay.rs] auth [LOGIN] Host2: connecting and login on host2 [194.146.57.11] port [993] with user [milan@mediadisplay.rs] Host2 IP address: 194.146.57.11 Host2 banner: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] Dovecot (Ubuntu) ready. Host2 capability before authentication: IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5 AUTH Host2: 194.146.57.11 says it has CAPABILITY for AUTHENTICATE LOGIN Host2: success login on [194.146.57.11] with user [milan@mediadisplay.rs] auth [LOGIN] Host1: state Authenticated Host2: state Authenticated Host1 capability once authenticated: IMAP4rev1 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 SNIPPET=FUZZY PREVIEW=FUZZY STATUS=SIZE NAMESPACE LITERAL+ NOTIFY SPECIAL-USE COMPRESS=DEFLATE QUOTA THREAD I18NLEVEL CONTEXT SNIPPET PREVIEW STATUS COMPRESS Host2 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 THREAD I18NLEVEL CONTEXT 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" "1.977" "os" "linux" "vendor" "Gilles LAMIRAL" "support-url" "https://imapsync.lamiral.info/" "date" "23-Dec-2019 20:18:02 +0000" "side" "host1") Sent 181 bytes Read: * ID ("name" "Dovecot") 4 OK ID completed (0.001 + 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" "1.977" "os" "linux" "vendor" "Gilles LAMIRAL" "support-url" "https://imapsync.lamiral.info/" "date" "23-Dec-2019 20:18:02 +0000" "side" "host2") Sent 181 bytes Read: * ID ("name" "Dovecot") 4 OK ID completed (0.001 + 0.000 secs). Host1: found 7 folders. Host2: found 1 folders. Host1: guessing separator from folder listing: [.] Host1: separator given by NAMESPACE: [.] Host2: guessing separator from folder listing: [/] Host2: separator given by NAMESPACE: [.] Host1: guessing prefix from folder listing: [INBOX.] Host1: prefix given by NAMESPACE: [INBOX.] Host2: guessing prefix from folder listing: [] Host2: prefix given by NAMESPACE: [] 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 on automapping folders ( use --noautomap to turn off automapping ) Host1: special INBOX.Sent = \Sent Host1: special INBOX.spam = \Junk Host1: special INBOX.Trash = \Trash Host1: special INBOX.Drafts = \Drafts Host1: special INBOX.Archive = \Archive ++++ 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 \Sent) "." INBOX.Sent * LIST (\HasNoChildren) "." INBOX.Junk * LIST (\HasNoChildren \Junk) "." INBOX.spam * LIST (\HasNoChildren \Trash) "." INBOX.Trash * LIST (\HasNoChildren \Drafts) "." INBOX.Drafts * LIST (\HasNoChildren \Archive) "." INBOX.Archive 17 OK List completed (0.001 + 0.000 secs). [INBOX] [INBOX.Archive] [INBOX.Drafts] [INBOX.Junk] [INBOX.Sent] [INBOX.Trash] [INBOX.spam] Host2: folders list (first the raw imap format then the [X] = [Y]): * LIST (\HasNoChildren) "." INBOX 10 OK List completed (0.001 + 0.000 secs). [INBOX] Host1: will not syncing empty folders on host1. Use --noskipemptyfolders to create them anyway on host2 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. Host1 folder 1/7 [INBOX] Size: 11922365 Messages: 3 Biggest: 11805773 Host2 folder 1/7 [INBOX] Size: 0 Messages: 0 Biggest: 0 Host2-Host1 -11922365 -3 -11805773 Host1 folder 2/7 [INBOX.Archive] Size: 0 Messages: 0 Biggest: 0 Host2 folder 2/7 [Archive] does not exist yet Host2-Host1 0 0 0 Host1 folder 3/7 [INBOX.Drafts] Size: 0 Messages: 0 Biggest: 0 Host2 folder 3/7 [Drafts] does not exist yet Host2-Host1 0 0 0 Host1 folder 4/7 [INBOX.Junk] Size: 0 Messages: 0 Biggest: 0 Host2 folder 4/7 [Junk] does not exist yet Host2-Host1 0 0 0 Host1 folder 5/7 [INBOX.Sent] Size: 0 Messages: 0 Biggest: 0 Host2 folder 5/7 [Sent] does not exist yet Host2-Host1 0 0 0 Host1 folder 6/7 [INBOX.Trash] Size: 0 Messages: 0 Biggest: 0 Host2 folder 6/7 [Trash] does not exist yet Host2-Host1 0 0 0 Host1 folder 7/7 [INBOX.spam] Size: 0 Messages: 0 Biggest: 0 Host2 folder 7/7 [spam] does not exist yet Host2-Host1 0 0 0 Host1 Nb folders: 7 folders Host2 Nb folders: 7 folders Host1 Nb messages: 3 messages Host2 Nb messages: 0 messages Host1 Total size: 11922365 bytes (11.370 MiB) Host2 Total size: 0 bytes (0.000 KiB) Host1 Biggest message: 11805773 bytes (11.259 MiB) Host2 Biggest message: 0 bytes (0.000 KiB) Time spent on sizing: 2.7 seconds ++++ Looping on each one of 7 folders to sync ETA: Fri Nov 13 22:01:04 2020 0 s 3/3 msgs left Folder 1/7 [INBOX] -> [INBOX] Host1: folder [INBOX] has 3 messages in total (mentioned by SELECT) Host2: folder [INBOX] has 0 messages in total (mentioned by SELECT) Host2: folder [INBOX] permanentflags: Host1: folder [INBOX] considering 3 messages Host2: folder [INBOX] considering 0 messages Host1: folder [INBOX] selected 3 messages, duplicates 0 Host2: folder [INBOX] selected 0 messages, duplicates 0 msg INBOX/1 {89739} copied to INBOX/1 2.07 msgs/s 181.840 KiB/s 87.636 KiB copied ETA: Fri Nov 13 22:01:05 2020 1 s 2/3 msgs left msg INBOX/2 {26853} copied to INBOX/2 3.31 msgs/s 188.206 KiB/s 113.859 KiB copied ETA: Fri Nov 13 22:01:05 2020 0 s 1/3 msgs left msg INBOX/3 {11805773} copied to INBOX/3 1.02 msgs/s 3.869 MiB/s 11.370 MiB copied ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left Folder 2/7 [INBOX.Archive] -> [Archive] Host1: folder [INBOX.Archive] has 0 messages in total (mentioned by SELECT) Host1: skipping empty host1 folder [INBOX.Archive] ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left Folder 3/7 [INBOX.Drafts] -> [Drafts] Host1: folder [INBOX.Drafts] has 0 messages in total (mentioned by SELECT) Host1: skipping empty host1 folder [INBOX.Drafts] ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left Folder 4/7 [INBOX.Junk] -> [Junk] Host1: folder [INBOX.Junk] has 0 messages in total (mentioned by SELECT) Host1: skipping empty host1 folder [INBOX.Junk] ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left Folder 5/7 [INBOX.Sent] -> [Sent] Host1: folder [INBOX.Sent] has 0 messages in total (mentioned by SELECT) Host1: skipping empty host1 folder [INBOX.Sent] ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left Folder 6/7 [INBOX.Trash] -> [Trash] Host1: folder [INBOX.Trash] has 0 messages in total (mentioned by SELECT) Host1: skipping empty host1 folder [INBOX.Trash] ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left Folder 7/7 [INBOX.spam] -> [spam] Host1: folder [INBOX.spam] has 0 messages in total (mentioned by SELECT) Host1: skipping empty host1 folder [INBOX.spam] ETA: Fri Nov 13 22:01:07 2020 0 s 0/3 msgs left ++++ End looping on each folder Folders sizes after the synchronization. You can remove this foldersizes listing by using "--nofoldersizesatend" Host1 folder 1/7 [INBOX] Size: 11922365 Messages: 3 Biggest: 11805773 Host2 folder 1/7 [INBOX] Size: 11922365 Messages: 3 Biggest: 11805773 Host2-Host1 0 0 0 Host1 folder 2/7 [INBOX.Archive] Size: 0 Messages: 0 Biggest: 0 Host2 folder 2/7 [Archive] does not exist yet Host2-Host1 0 0 0 Host1 folder 3/7 [INBOX.Drafts] Size: 0 Messages: 0 Biggest: 0 Host2 folder 3/7 [Drafts] does not exist yet Host2-Host1 0 0 0 Host1 folder 4/7 [INBOX.Junk] Size: 0 Messages: 0 Biggest: 0 Host2 folder 4/7 [Junk] does not exist yet Host2-Host1 0 0 0 Host1 folder 5/7 [INBOX.Sent] Size: 0 Messages: 0 Biggest: 0 Host2 folder 5/7 [Sent] does not exist yet Host2-Host1 0 0 0 Host1 folder 6/7 [INBOX.Trash] Size: 0 Messages: 0 Biggest: 0 Host2 folder 6/7 [Trash] does not exist yet Host2-Host1 0 0 0 Host1 folder 7/7 [INBOX.spam] Size: 0 Messages: 0 Biggest: 0 Host2 folder 7/7 [spam] does not exist yet Host2-Host1 0 0 0 Host1 Nb folders: 7 folders Host2 Nb folders: 7 folders Host1 Nb messages: 3 messages Host2 Nb messages: 3 messages Host1 Total size: 11922365 bytes (11.370 MiB) Host2 Total size: 11922365 bytes (11.370 MiB) Host1 Biggest message: 11805773 bytes (11.259 MiB) Host2 Biggest message: 11805773 bytes (11.259 MiB) Time spent on sizing: 0.5 seconds ++++ Statistics Transfer started on : Fri Nov 13 22:01:01 2020 Transfer ended on : Fri Nov 13 22:01:08 2020 Transfer time : 6.3 sec Folders synced : 7/7 synced Messages transferred : 3 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 : 0 Messages found in host1 not in host2 : 0 messages Messages found in host2 not in host1 : 0 messages Messages deleted on host1 : 0 Messages deleted on host2 : 0 Total bytes transferred : 11922365 (11.370 MiB) Total bytes skipped : 0 (0.000 KiB) Message rate : 0.5 messages/s Average bandwidth rate : 1835.8 KiB/s Reconnections to host1 : 0 Reconnections to host2 : 0 Memory consumption at the end : 201.6 MiB (started with 159.9 MiB) Load end is : 1.45 0.55 0.38 1/1192 on 2 cores Biggest message : 11805773 bytes (11.259 MiB) Memory/biggest message ratio : 17.9 Start difference host2 - host1 : -3 messages, -11922365 bytes (-11.370 MiB) Final difference host2 - host1 : 0 messages, 0 bytes (0.000 KiB) The sync looks good, all 3 identified messages in host1 are on host2. There is no unidentified message The sync is strict, all 3 identified messages in host2 are on host1. Detected 0 errors Check if a new imapsync release is available by adding --releasecheck Homepage: https://imapsync.lamiral.info/ Exiting with return value 0 (EX_OK: successful termination) 0/20 nb_errors/max_errors Log file is LOG_imapsync/2020_11_13_22_01_01_755_milan@mediadisplay.rs_milan@mediadisplay.rs.txt ( to change it, use --logfile filepath ; or use --nolog to turn off logging )