mailscanner behind a smtpd frontend
philipp.snizek at terreactive.ch
Mon Feb 13 08:52:51 GMT 2006
I have here an architecture I'm not too happy with.
It looks like this:
inet -- smtpd -- antispam gw (mailscanner) -- LAN
The problem I see here is that the antispam gw gets mails with headers
from the smtpd. Thus, if the smtpd forwards spam the antispam gw learns
that (SA autolearn enabled).
I'd prefer to have the antispam gw as a mail frontend.
However, from firewalling point of view my client wants to make sure
that only smtp transactions reach the antispam gw.
I have following ideas how to deal with this problem:
a) have mailscanner remove the smtpd's received:from header line
b) tell SA to ignore the smtpd's received:from header line
c) use a transparent smtpd service
However, I wonder what of this is possible and if there are other
Thanks a lot
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