Hello,
I am replying to myself, because I found the problem:
> smtp inet n - - - - smtpd
> 25025 inet n - - - - smtpd
> -o smtpd_tls_auth_only=no
> -o smtpd_sasl_auth_enable=yes
> -o smtpd_sasl_security_options=noanonymous,noplaintext
> -o smtpd_sasl_local_domain=xxxx
> -o broken_sasl_auth_clients=yes
> -o smtpd_client_restrictions=permit_sasl_authenticated,reject
> -o
> smtpd_recipient_restrictions=permit_sasl_authenticated,reject_unauth_destination
> -o content_filter=
Here ^^^^^^^^^^^^^^^^^ I turned off the content_filter which is not needed
for the SMTP AUTH submissions. I overlooked though that I had specified
receive_override_options = no_address_mappings
in main.cf so virtual mapping would not occur before the content_filter, and
thus never for the additional smtpd listening on 25025. After adding a line
-o receive_override_options=
to it in master.cf now everything works as expected.
Kind regards,
Ch. Scheurer
