On Dec 4, 2007, at 8:00 AM, Bill Tangren wrote:
I'm having a problem with postfix, version 2.2.10-1.1.el4. Because
of the screwy firewall configuration here, some lcoal email comes
in to my email server with no reverse DNS entry. I had been
rejecting those, but now that some of our own email is coming in
that way, I need to turn it off. I thought I had been using
reject_unknown_sender_domain to reject such email, but when I
comment it out, I'm still rejecting email with no reverse DNS entry.
reject_unknown_sender_domain rejects messages when the domain part of
the SMTP sender address cannot be found in DNS.
My question: How do I turn this feature off?
This is an example of a rejection in the log:
Dec 4 10:49:47 aa postfix/smtpd[19280]: NOQUEUE: reject: RCPT from
unknown[x.x.x.x]: 450 Client host rejected: cannot find your
hostname, [x.x.x.x]; from=<emailaddy> to=<localuser> proto=ESMTP
helo=<sender>
Look for a reject_unknown_client directive in one of the
smtpd_mumble_restrictions in your main.cf -- then remove it.
--
Ian Ward Comfort <icomfort@xxxxxxxxxxxxxxxxxxxx>
System Administrator, Student Computing, Stanford University
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