Re: [Exim] recently getting smtp errors from gmx

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Autor: Frank Elsner
Data:  
A: Konstantin Kletschke
CC: exim-users
Assumpte: Re: [Exim] recently getting smtp errors from gmx
On Tue, 20 Apr 2004 16:44:53 +0200 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:
>
> This message was created automatically by mail delivery software.
>
> A message that you sent could not be delivered to one or more of its
> recipients. This is a permanent error. The following address(es) failed:
>
>   Superjohn@???
>     SMTP error from remote mailer after RCPT TO:<Superjohn@???>:
>     host mx0.gmx.net [213.165.64.100]: 553-5.7.1 {mx027} Your host's IP address
> +does not resolve. The recipient does
>     553 5.7.1 not want to receive mail from such hosts.


DNS setup is in error, the PTR record is missing:

> host mail.ku-gbr.de

mail.ku-gbr.de has address 62.67.222.139               <- OK


> host 62.67.222.139

Host 139.222.67.62.in-addr.arpa not found: 3(NXDOMAIN) <- NOT OK


Kind regard    _______________________________________________________________
Frank Elsner  /                         c/o  Technische Universitaet Berlin   |
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