stricter postfix settings

Paul Aurich paul at
Sun Jun 13 15:52:49 EDT 2010

At John's suggestion, I'm bringing this up here.

It would be nice if the mail servers were a bit more
restrictive in what mail they accept.  In particular, my
( mail server is routinely rejecting a message or two
coming from bogus domains:

postfix/smtpd: NOQUEUE: reject: RCPT from[]:
450 4.1.8 <apache at localhost.localdomain>: Sender address rejected:
Domain not found; from=<apache at localhost.localdomain>
to=<paul at> proto=ESMTP helo=<>

This is the reject_unknown_sender_domain smtpd_sender_restrictions
which I think should add :).

There might be other things that could be added (greylisting or pinging
an RBL come to mind), but I don't feel as strongly about those.


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