Can't send to mailing list from server

Gene Bomgardner glbjr_01 at
Wed Sep 8 11:55:46 PDT 2004

>From: Karl Swartz <karl at>
>To: freebsd-questions at
>Subject: Re: Can't send to mailing list from server
>Date: Wed, 8 Sep 2004 09:53:32 -0700
> > Client host rejected: cannot find your hostname, [209.x.y.z]
> >
> > 209.x.y.z is a static address with a DNS entry courtesy of my ISP.
> >
> > Any idea what the list's mta is looking for and how I can provide it?
>By obfuscating the last three octets you destroyed the evidence needed
>to fully help you.  The error text (cannot find your hostname) suggests
>you don't have reverse DNS -- mail admins increasingly won't accept mail
>from such hosts because that's often a sign of a mismanaged network
>which also happens to be spewing spam.
>However, your message includes a full 209 address in the headers:
>    Received: from by with HTTP;
>	Wed, 08 Sep 2004 15:51:01 GMT
>    X-Originating-IP: []
> does have reverse DNS, so if that's the address that was
>not being accepted by the freebsd mail server it's a bit more puzzling.
>Perhaps reverse DNS was temporarily unavailble.

Correct - the IP is indeed and does have a reverse DNS. 
However, forward lookup for the same domain will yield a completely seperate 
address since I'm still tied to domaindirect's name servers and using some 
of their redirection. I'm beginning to suspect that that's where the problem 
is coming from.


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