Here is imapsync 2.314 /opt/homebrew/Cellar/imapsync/2.314_1/libexec/bin/imapsync on host Humperdoos-Mac-mini.local, a darwin system with 2.8/24.0 free GiB of RAM, 48.63% used by processes. with Perl 5.34.1 and Mail::IMAPClient 3.43 Transfer started at Thursday 06 August 2026-08-06 16:48:51 +0700 +07 PID is 49203 my PPID is 8434 Log file is LOG_imapsync/suthum@advmfr.net_065.log ( to change it, use --logfile path ; or use --nolog to turn off logging ) Load is 13.82 14.11 11.90 on 10 cores Real user id is humperdoo (uid 501) Effective user id is humperdoo (euid 501) $RCSfile: imapsync,v $ $Revision: 2.314 $ $Date: 2025/09/23 16:55:17 $ Command line used, run by /usr/bin/perl5.34: /opt/homebrew/Cellar/imapsync/2.314_1/libexec/bin/imapsync --host1 mail.advmfr.net --user1 suthum@advmfr.net --passfile1 /var/folders/jm/8ynlmmb14pg_srb04g1384kw0000gn/T/imapsync-bulk-ve136qfq/p1 --host2 arome.o2switch.net --user2 suthum@advmfr.net --passfile2 /var/folders/jm/8ynlmmb14pg_srb04g1384kw0000gn/T/imapsync-bulk-ve136qfq/p2 --logdir LOG_imapsync --logfile suthum@advmfr.net_065.log Current directory is /Users/humperdoo/Github/Internal Tool/tools/imapsync-bulk Temp directory is /Users/humperdoo/tmp ( to change it use --tmpdir dirpath ) Creating temp directory /Users/humperdoo/tmp kill -QUIT 49203 # special behavior: call to sub catch_exit kill -TERM 49203 # special behavior: call to sub catch_exit kill -INT 49203 # special behavior: call to sub catch_reconnect kill -HUP 49203 # special behavior: call to sub catch_print kill -USR1 49203 # special behavior: call to sub toggle_sleep Logging to a logfile by default. To turn off logging, use --nolog Directory LOG_imapsync is writable and readable and gointoable. Good. File /Users/humperdoo/tmp/imapsync.pid does not exist PID file is /Users/humperdoo/tmp/imapsync.pid ( to change it, use --pidfile filepath ; to avoid it use --pidfile "" ) Writing my PID 49203 in /Users/humperdoo/tmp/imapsync.pid Writing also my logfile name in /Users/humperdoo/tmp/imapsync.pid : LOG_imapsync/suthum@advmfr.net_065.log Modules version list ( use --no-modulesversion to turn off printing this Perl modules list ): Authen::NTLM 1.09 CGI 4.48 Compress::Zlib 2.102 Crypt::OpenSSL::RSA 0.31 Digest::HMAC_MD5 1.01 Digest::HMAC_SHA1 1.03 Digest::MD5 2.58 Digest::SHA 6.02 Encode 3.0801 Encode::IMAPUTF7 1.07 File::Copy::Recursive 0.45 File::Spec 3.80 Getopt::Long 2.52 HTML::Entities 3.69 IO::Socket 1.46 IO::Socket::INET 1.46 IO::Socket::INET6 2.72 IO::Socket::IP 0.43 IO::Socket::SSL 2.068 IO::Tee 0.65 JSON 4.10 JSON::WebToken 0.10 LWP 6.44 MIME::Base64 3.16 Mail::IMAPClient 3.43 Net::Ping 2.74 Net::SSLeay 1.88 Term::ReadKey 2.38 Test::MockObject 1.20200122 Time::HiRes 1.9767 Unicode::String 2.10 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 ) Probing imap ssl on host mail.advmfr.net port 993, got banner: * OK [CAPABILITY IMAP4rev1 LOGIN-REFERRALS ID ENABLE IDLE SASL-IR LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot ready. 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 ) Probing imap ssl on host arome.o2switch.net port 993, got banner: * OK [CAPABILITY IMAP4rev1 LOGIN-REFERRALS ID ENABLE IDLE SASL-IR LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot ready. 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 server certificate. Host1: Use --sslargs1 SSL_verify_mode=1 to have SSL_VERIFY_PEER, ie, check the server certificate. of host1 Host2: SSL default mode is like --sslargs2 "SSL_verify_mode=0", meaning for host2 SSL_VERIFY_NONE, ie, do not check the server certificate. Host2: Use --sslargs2 SSL_verify_mode=1 to have SSL_VERIFY_PEER, ie, check the server certificate. 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 connection keepalive is on on host1. Use --nokeepalive1 to disable it. Host2: imap connection keepalive is on on host2. Use --nokeepalive2 to disable it. Host1: IMAP server [mail.advmfr.net] port [993] user [suthum@advmfr.net] Host2: IMAP server [arome.o2switch.net] port [993] user [suthum@advmfr.net] Host1: connecting and login on host1 [mail.advmfr.net] port [993] with user [suthum@advmfr.net] DEBUG: .../IO/Socket/SSL.pm:1177: global error: Undefined SSL object DEBUG: .../IO/Socket/SSL.pm:1177: global error: Undefined SSL object Host1 IP address: 162.241.219.218 Local IP address: 192.168.1.36 Host1 banner: * OK [CAPABILITY IMAP4rev1 LOGIN-REFERRALS ID ENABLE IDLE SASL-IR LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot ready. Host1 capability before authentication: IMAP4rev1 LOGIN-REFERRALS ID ENABLE IDLE SASL-IR LITERAL+ AUTH=PLAIN AUTH=LOGIN AUTH Host1: mail.advmfr.net says it has CAPABILITY for AUTHENTICATE LOGIN Host1 info: authmech [LOGIN] user [suthum@advmfr.net] authuser [] IsUnconnected [] Host1 failure: Error login on [mail.advmfr.net] with user [suthum@advmfr.net] auth [LOGIN]: 2 NO [AUTHENTICATIONFAILED] Authentication failed. Host1: failed login on [mail.advmfr.net] with user [suthum@advmfr.net] auth [LOGIN] Host2: connecting and login on host2 [arome.o2switch.net] port [993] with user [suthum@advmfr.net] DEBUG: .../IO/Socket/SSL.pm:1177: global error: Undefined SSL object DEBUG: .../IO/Socket/SSL.pm:1177: global error: Undefined SSL object Host2 IP address: 109.234.162.168 Local IP address: 192.168.1.36 Host2 banner: * OK [CAPABILITY IMAP4rev1 LOGIN-REFERRALS ID ENABLE IDLE SASL-IR LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot ready. Host2 capability before authentication: IMAP4rev1 LOGIN-REFERRALS ID ENABLE IDLE SASL-IR LITERAL+ AUTH=PLAIN AUTH=LOGIN AUTH Host2: arome.o2switch.net says it has CAPABILITY for AUTHENTICATE LOGIN Host2: success login on [arome.o2switch.net] with user [suthum@advmfr.net] auth [LOGIN] or [LOGIN] ++++ Listing 1 errors encountered during the sync ( avoid this listing with --noerrorsdump ). Err 1/1: Host1 failure: Error login on [mail.advmfr.net] with user [suthum@advmfr.net] auth [LOGIN]: 2 NO [AUTHENTICATIONFAILED] Authentication failed. The most frequent error is ERR_AUTHENTICATION_FAILURE_USER1. Check the credentials for suthum@advmfr.net. Exiting with return value 161 (EXIT_AUTHENTICATION_FAILURE_USER1) 1/50 nb_errors/max_errors PID 49203 Removing pidfile /Users/humperdoo/tmp/imapsync.pid Disconnecting from host2 arome.o2switch.net user2 suthum@advmfr.net Log file is LOG_imapsync/suthum@advmfr.net_065.log ( to change it, use --logfile filepath ; or use --nolog to turn off logging )