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From: Noel Jones (no email)
Date: Thu Mar 01 2007 - 15:52:59 EST
At 10:09 PM 2/28/2007, Raal Goff wrote:
>I have a spam filter machine setup to check all incoming mail. It
>comes into postfix, which checks valid email addresses against a
>mysql database, then filters the spam and looks up which server it
>should forward the mail on via mysql again. The problem is that when
>external servers enter a bad email address, the server returns a 450
>status code and complains that the transport is unavailable, instead
>of a 550 fatal status code. The behaviour i want is if the mysql
>lookup fails, it returns 550. If I connect via sasl or from a host
>in $mynetworks it gives to correct 550 error code. My recipient
>restrictions are like so:
>
>smtpd_recipient_restrictions = permit_mynetworks,
>permit_sasl_authenticated, reject_unauth_destination,
>reject_unverified_recipient
>
>And i have also set
>
>unverified_recipient_reject_code = 550
>
>I'm not sure why it is not giving 550 status messages to external
>clients. Below are my changes to main.cf
We greatly prefer to see output of "postconf -n" and log entries
demonstrating the problem rather than random main.cf snippings and
vague descriptions.
Your main.cf is configured with "reject_unverified_recipient" to
query a downstream mail server to see if a recipient is valid. The
transport to do this is apparently unavailable. The full log message
will give more clues what the problem is.
-- Noel Jones
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