From: Dennis Putnam (Dennis.Putnamaimaudit.com)
Date: Thu Sep 27 2007 - 08:19:09 CDT

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I am getting complains from senders saying their mail is
undeliverable. What is not clear is what server (the sender's or the
receiver's) is generating the error. In any case I have no idea what
it means. Can someone help? TIA.

> The following message to <mymailboxmydomain.com> was
> undeliverable. The reason for the problem: 5.1.0 - Unknown address
> error
> 500-'Firewall Error'

I should note that this is intermittent as some mail gets through and
it is only this sender's domain that has the problem. That implies to
me that the problem is on the sender's server but I need more
information.

Dennis Putnam
Sr. IT Systems Administrator
AIM Systems, Inc.
11675 Rainwater Dr., Suite 200
Alpharetta, GA 30004
Phone: 678-240-4112
Main Phone: 678-297-0700
FAX: 678-297-2666 or 770-576-1000
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