Re: Strange problem with mail sent from Exchange 2003 server

This error normally happens when an exchange server talks to a mail server with greylisting.

I will send you a fix guide for exchange 2003 and below.2007 and later have fixed this issue. 

Sent from my iPhone

On Feb 25, 2011, at 10:48 AM, Jack Croqueta <[email protected]> wrote:

> Hi,
> 
> I'm suffering a rare problem when I receive e-mails from a exchange 2003 server to my qmail-ldap server.
> 
> Many mails sent from this server have this problem:
> -----------------------------------------------------------------------
> 220 mx.mydomain ESMTP
> EHLO exchange2003
> 250-mx.mydomain
> 250-PIPELINING
> 250-SIZE 26214400
> 250-DATAZ
> 250-STARTTLS
> 250 8BITMIME
> 
> MAIL FROM:<xxxxxxxx@exchange2003> SIZE=1433152
> 250 ok
> RCPT TO:<me@mydomain>
> 250 ok
> DATA
> 354 go ahead punk, make my day
> 
> // (1200seconds later...)
> 
> 451 timeout (#4.4.2)
> 
> 
> The exchange 2003 server can send without problem to other servers -as gmail.com or pobladores.com-.
> 
> It isn't a problem of mail size restriction or antispam policy. The delivery of a mail can fail X times and finally send ok. Others, expires after two days retrying.
> 
> Have you any idea?
> 
> Regards,
> Spamis
>