RE: [Exim] recently getting smtp errors from gmx

Konstantin Kletschke wrote:
> Hi Folks.
>
> Since a couple of days I get weird errors when my customers are
> mailing to gmx.de (or gmx.net). They use mail.ku-gbr.de as smtp host
> and he (it/she/?) shoul deliver them to gmx which worked fine for
> years, but since I couple of days I get this:

mail.ku-gbr.de resolves to 62.67.222.139.

However, 62.67.222.139 doesn't resolve back to mail.ku-gbr.de. You need to
configure reverse DNS for your domain.

Steven
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Steven Dickenson <sdickenson@???>
Network Administrator
The Key School, Annapolis Maryland