[Exim] 451 Could not complete sender verify callout

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Συντάκτης: Johann Spies
Ημερομηνία:  
Προς: exim-users
Αντικείμενο: [Exim] 451 Could not complete sender verify callout
We use a server on our campus to send out email to suppliers and
creditors of the university. A problem that we have this year is that
a lot of messages fail with the error message in the subject line.
That was not the case last year.

I suspect that email administrators are using stricter measures to
verify senders in order to counter spam.

There are to many cases to make it a worth while effort to contact
those system adminstators.

Is there something I can do in my exim setup that can help avoiding
these errors?

Here is an example of the headers of such a message:

Return-path: <BEG12@???>
Received: from sun023.sun.ac.za ([146.232.128.66])
        by maties2.sun.ac.za with smtp (Exim 4.05)
        id 1AlPT6-0007rB-00
        for someone@???; Tue, 27 Jan 2004 11:25:12 +0200
Received: by sun023.sun.ac.za for CATHYW@???;
          Tue, 27 Jan 2004 11:16:52 +0200
Date: Tue, 27 Jan 2004 11:16:52 +0200
From: BEG12@???
To:    someone@???
Message-Id: <040127111652.135cdb@???>
Subject: UNIVERSITY OF STELLENBOSCH - PAYMENT ADVICE 209
X-Scanner: exiscan for exim4 (http://duncanthrax.net/exiscan/)
+*1AlPT6-0007rB-00*P44X4hNiqYk*


Regards
Johann
--
Johann Spies          Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch


     "My son, if sinners entice thee, consent thou not."
                            Proverbs 1:10