> @Andreas
>
> Größe ist eine Zeile...

MTU ist die TCP/IP Paketgröße. Was meinst Du mit "eine Zeile"?

An der Stelle würde ich mit einem Sniffer (z.B. tcpdump) den TCP/IP
Verkehr von dem Host mitschneiden und schauen ob was zu sehen ist, warum
aufgelegt wird.

> Mail sourecodes:
>
> webmail über mail.google.com
> =========================
>
> MIME-Version: 1.0
> Received: by 10.150.181.10 with HTTP; Tue, 12 May 2009 08:18:20 -0700
> (PDT)
> Date: Tue, 12 May 2009 17:18:20 +0200
> Delivered-To: [email protected]
> Message-ID: <[email protected]>
> Subject: test with webmail
> From: Matthias Neder <[email protected]>
> To: [email protected]
> Content-Type: multipart/alternative; boundary=000e0cd4d920e6a0790469b89a90
>
> --000e0cd4d920e6a0790469b89a90
> Content-Type: text/plain; charset=UTF-8
> Content-Transfer-Encoding: 7bit
>
> test webmail
>
> --000e0cd4d920e6a0790469b89a90
> Content-Type: text/html; charset=UTF-8
> Content-Transfer-Encoding: 7bit
>
> test webmail<br>
>
> --000e0cd4d920e6a0790469b89a90--
>
>
>
> Thunderbird source:
> =========================
> Return-Path: <[email protected]>
> Received: from ?192.168.40.86? ([195.37.234.205])
>         by mx.google.com with ESMTPS id 7sm846009bwz.5.2009.05.13.04.33.47
>         (version=TLSv1/SSLv3 cipher=RC4-MD5);
>         Wed, 13 May 2009 04:33:47 -0700 (PDT)
> Message-ID: <[email protected]>
> Date: Wed, 13 May 2009 13:33:21 +0200
> From: Matthias Neder <[email protected]>
> User-Agent: Thunderbird 2.0.0.21 (Windows/20090302)
> MIME-Version: 1.0
> To: [email protected]
> Subject: th15
> Content-Type: text/plain; charset=ISO-8859-15; format=flowed
> Content-Transfer-Encoding: 7bit
>
> th15

--
Andreas

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