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Re: Another "timed out while sending end of data" Error

From: Wietse Venema (wietseporcupine.org)
Date: Fri Aug 27 2010 - 06:08:59 CDT

Lie, Jafaruddin:
> Hi Wietse
> 1. No "220 *********************2******0******200*****02*****0*00" when
> telneting into the Exchange server:
>
> [rootmailinglist]~# telnet x.x.1.74 25
> Trying x.x.1.74...
> Connected to x.x.1.74 (192.168.1.74).
> Escape character is '^]'.
> 220 xx.xx.edu.au Microsoft ESMTP MAIL Service, Version:
> 6.0.3790.4675 ready at Fri, 27 Aug 2010 11:35:55 +1000

There is no problem in Postfix that causes sessions to block, so
it is a problem down-stream.

You can record a session ON THE POSTFIX HOST with tcpdump
(www.postfix.org/DEBUG_README.html) and see that the sending side
is not in error.

        Wietse