[ILUG] SMTP oddity

[Niall O Broin]

I've an odd SMTP issue here, which a customer asked me to look at. 
Somebody sent an email to two people in the customer's office - one got 
it ten hours after the other. Having finally extracted the headers of 
the mails from the customer, there's something very odd - the delayed 
mail has two Received lines from the same stage of the process, i.e. 
Received by server B from server A   and these two lines have times ~10 
hours apart.


The email which arrived promptly had 3 Received; headers - the delayed 
one had  4, the additional one being the extra one mentioned above. The 
odd tow headers are like this:

Received: from anchor-post-36.mail.demon.net [194.217.242.86] (HELO 
c1m11.emaildefenseservice.com)
	by c1m11.emaildefenseservice.com (mxl_mta-1.3.8-10p6) with SMTP id 
22d99b24.3641.199.c1m11;
	Wed, 22 Jun 2005 13:17:22 -0400 (EDT)
Received: from anchor-post-36.mail.demon.net [194.217.242.86] (EHLO 
anchor-post-36.mail.demon.net)
	by c1m11.emaildefenseservice.com (mxl_mta-1.3.8-10p6) with ESMTP id 
8d219b24.2860.173.c1m11;
	Wed, 22 Jun 2005 03:27:20 -0400 (EDT)



Any ideas ?



Niall