On Sat, Nov 06, 2021 at 06:51:03PM +0100, Gionatan Danti wrote:
> But I was also interested in a single server solution, not least to
> better understand postfix itself.
Though I don't recommend complex all-in-one configurations, you
use the "-o cleanup_service_name" option to configure separate
cleanup(8) services for separate smtpd(8) instances:
master.cf:
smtp inet ... smtpd
-o cleanup_service_name=cleanup-mta
...
cleanup-mta unix ... cleanup
-o syslog_name=postfix/cleanup-mta
-o header_checks=$mta_header_checks
-o mime_header_checks=$mta_mime_header_checks
-o nested_header_checks=$mta_nested_header_checks
...
main.cf:
# Local (sendmail/postdrop) and SMTP submission:
header_checks = ...
mime_header_checks = ...
nested_header_checks = ... best explicitly empty ...
#
mta_header_checks = ... date, subject etc. rules ...
mta_mime_header_checks = ... attachment MIME header rules ...
mta_nested_header_checks = ... best explicitly empty ...
I think that the default setting:
nested_header_checks = $header_checks
is unfortunate, perhaps we should change it to empty at compatibility
level >= 3.7.
--
Viktor.
