Dear Maintainer,
After upgrading to buster, when sieve redirect was in action the sender
was vmail, and not the rewritten with SRS sender.
To work around this, the option submission_host = localhost was set in
protocol lmtp
This led to the error (in exim4) :
"Non-CRLF-terminated header, under CHUNKING: message abandoned"
The problem was fixed by upgrading dovecot packages to testing version 2.3.7.2 with Pigeonhole 0.5.7.2
(This is why at the end of the file you have Versions of packages
dovecot-core 2.3.7.2 and not the buggy version 2.3.4.1)
Please do not hesitate if you need more information, it's my first bug
report !
Regards,