Postfix Strange Behaviours

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Postfix Strange Behaviours
\ Gabriel Marais (21 Sep 2007)
. \ (Wietse Venema) (21 Sep 2007)
. . \ Gabriel Marais (21 Sep 2007)
. . . \ (Wietse Venema) (21 Sep 2007)
. . . . \ Gabriel Marais (21 Sep 2007)

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Subject:	Postfix Strange Behaviours
Group:	Postfix-users
From:	Gabriel Marais
Date:	21 Sep 2007

Hi Guys

Not sure where the problem might be exactly, but here is the scenario. We have a Postfix, MailScanner server that filters mail and passes it onto an Exim server for local delivery.

On the Postfix server, as soon as a mail comes in with multiple recipients (10 or more) it just hangs in the queue. The error message on the Exim logs come through as

2007-09-21 09:16:36 SMTP connection from (x.x.x.x) [x.x.x.x] lost while reading message data (header)

Error logs on the Postfix server comes through as

Sep 21 09:22:32 filter01 postfix/qmgr[4132]: 9F8413FC46F: to=<xxx>, relay=none, delay=13, status=deferred (delivery temporarily suspended: conversation with x.x.x.x[x.x.x.x] timed out while sending MAIL FROM)

This only happens for mail with multiple recipients, any and all other mails are going through just fine.

Any help would be much appreciated.

Regards

Gabriel