Transfer started at Thu May  7 12:55:22 2020
PID is 80838
Log file is LOG_imapsync/2020_05_07_12_55_22_info@nativofurniture.co.uk.txt ( to change it, use --logfile path ; or use --nolog to turn off logging )
$RCSfile: imapsync,v $ $Revision: 1.727 $ $Date: 2016/08/19 10:30:36 $ 
Here is a [linux] system (Linux s7.unlimited.rs 3.10.0-962.3.2.lve1.5.26.7.el7.x86_64 #1 SMP Wed Oct 2 07:53:12 EDT 2019 x86_64)
with Perl 5.16.3 Mail::IMAPClient 3.37
Command line used:
/bin/imapsync --host1 host241.checkdomain.de --user1 info@nativofurniture.co.uk --password1 MASKED \ --host2 s7.unlimited.rs --user2 info@nativofurniture.co.uk --password2 MASKED
Temp directory is /tmp  ( to change it use --tmpdir dirpath )
PID file is /tmp/imapsync.pid ( to change it use --pidfile filepath ; to avoid it use --pidfile "" )
Wrinting my PID 80838 in /tmp/imapsync.pid
Modules version list:
Mail::IMAPClient     3.37
IO::Socket           1.34
IO::Socket::INET     1.33
IO::Socket::INET6    2.69
IO::Socket::SSL      1.94
Net::SSLeay          1.55
Compress::Zlib       2.061
Digest::MD5          2.52
Digest::HMAC_MD5     1.01
Digest::HMAC_SHA1    1.03
Term::ReadKey        2.30
File::Spec           3.40
Time::HiRes          1.9725
Unicode::String      2.09
IO::Tee              0.64
File::Copy::Recursive 0.38
Authen::NTLM         1.09
URI::Escape          3.31
Data::Uniqid         0.12
JSON                 2.59
JSON::WebToken       0.10
Crypt::OpenSSL::RSA  0.28
LWP                  6.05
HTML::Entities       3.69
Getopt::Long         2.4
Test::MockObject     1.20120301
( use --no-modulesversion to turn off printing this Perl modules list )
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 connexion timeout is 120 seconds
Host2: imap connexion timeout is 120 seconds
Host1: IMAP server [host241.checkdomain.de] port [143] user [info@nativofurniture.co.uk]
Host2: IMAP server [s7.unlimited.rs] port [143] user [info@nativofurniture.co.uk]
Host1: connecting and login on host1 [host241.checkdomain.de] port [143] with user [info@nativofurniture.co.uk]
Host1 failure: can not open imap connection on host1 [host241.checkdomain.de] with user [info@nativofurniture.co.uk]: Unable to connect to host241.checkdomain.de: