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postfix-users: Re: Sender access issue

Re: Sender access issue

From: Noel Jones <njones_at_nospam>
Date: Mon Apr 11 2011 - 04:04:26 GMT

On 4/10/2011 10:38 PM, Alex wrote:
> Hi,
> I've read the access man page and help pages at, but I
> still don't understand. I think I may be trying to use
> check_sender_access in a way in which it wasn't intended. I have the
> following message:
> Apr 11 03:32:07 alex postfix/smtpd[2278]: NOQUEUE: reject: RCPT from
>[]: 450 4.1.8
> <>: Sender address rejected: Domain not
> found; from=<> to=<>
> proto=ESMTP helo=<>
> Would adding " OK" to my sender_access map
> permit this message to be delivered, even though the
> domain doesn't exist? It doesn't seem to work. Is
> there a better way to do this (outside of having them create a proper
> DNS entry, of course)?
> Thanks,
> Alex

Yes, that's the right format for a check_sender_access map.

Sounds as if the mail is being rejected by
reject_unknown_sender_domain. Your check_sender_access
whitelist needs to be before reject_unknown_sender_domain in
the same smtpd_*_restrictions section.

Show your "postconf -n" if you need more detailed help.

   -- Noel Jones