Re: lost connection after DATA

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lost connection after DATA
\ Dehnert James Sr (28 Jun 2007)
. \ Ralf Hildebrandt (29 Jun 2007)
. . \ Dehnert James Sr (31 Jul 2007)
. . . \ Ralf Hildebrandt (1 Aug 2007)

4 msg	Making postfix hand old deferred messages somew...

Subject:	Re: lost connection after DATA
Group:	Postfix-users
From:	Ralf Hildebrandt
Date:	29 Jun 2007

* Dehnert James Sr <jdehnert>:
> I have been seeing these lost connection after DATA messages coming
> from an upstream connection.
>
> brief snippet...
>
> Jun 28 15:52:14 mail1 postfix/smtpd[394]: C0727306820: client=smtp14.redcondor.com[64.84.16.166]
> Jun 28 15:52:14 mail1 postfix/smtpd[394]: lost connection after DATA from smtp14.redcondor.com[64.84.16.166]

Could be anything:
* MTU issues
* CISCO PIX or other stuff

> These are all larger messages. I have looked through the archives
> and setting my MTU down does not seem to resolve the issue. I have
> set the MTU to 1492, so I was wondering if anyone who has resolved
> this issue knows of an MTU sweet spot that I need to move too.

Go lower, try 1000 or 1400

> This client also has a Cisco ASA 5510 that has the latest release of
> the ASA IOS. Port 25 is mapped straight through with a NAT. The
> mail server is on a DMZ, but it looks like a server out on the internet.

> I have the PIX workarounds enabled, but I believe they are only for
> outbound connections (am I wrong)

No, you're right :)

> and we seem to have no issues there.

Since they're sending to you, THEY must have the PIX workarounds
enabled.

--
Ralf Hildebrandt (Ralf.Hildebrandt) plonk
Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de
"Of course, the best way to get accurate information on Usenet is to
post something wrong and wait for corrections." - Matthew Austern.