From: Scott Ruckh (sruckhgemneye.org)
Date: Sun Jan 20 2008 - 22:48:36 CST

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I searched the archives for mail forwarding loops and come across quite a
few articles discussing .forward files, and other messages talking about
Delivered-To: field being changed in envelope header, but I was not sure
if I have the same issue and if there was a solution.

So I have some clown sending email from 87.88.14.31. The From: field
contains an invalid email address from my domain. The Delivered-To: field
contains my address.

I end up with a "mail forwarding loop for <my email address>" email from
MAILER-DAEMONmy.domain.

As email accounts are separate from system machine accounts this is not an
issue with a .forward file. This sounds like an issue with then
Delivered-To: field being injected with bad info.

I did not find a resolution to this issue. What can I do to block these
types of emails?

Thanks.

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