> Is there maybe a way making received_header_text dynamic (empty when
> mail gets received on port 10026)? Any other way i didn't think of
> yet?
Yes. Set received_header_text to a string expansion that is blank if
the message was received from your special connection and the regular
Received: header otherwise. We have, for example:
received_header_text = ${if eq{$interface_port}{25} {Received: \
<standard version elided>} }
(This is on a machine that doesn't generate local email, which is why
we can get away with this particular check. It should really be 'is not
from our special return port'.)
As a general note to bystanders: it is not possible to do all filtering
and so on inline. In our case, our commercial anti-spam system only
supports two interfaces: you can talk to it with the Sendmail Milter
protocol (not supported by Exim), or by SMTP (where it acts as a SMTP
proxy).
- cks
