OSEC

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(Maybe OT) Speaking of Backscatter...

From: Leo Ofenstein (kashmastersbcglobal.net)
Date: Tue Apr 22 2008 - 10:18:14 CDT


First, I apologize if you are offended at a question not related
directly and absolutely to postfix (at least, it probably doesn't
relate... it may, but I don't know what software the County's email
server uses - it could be postfix for all I know ;>), but this group has
the best and brightest email minds that I have seen, and I am hoping you
can help!

My neighbor, a County Judge, has begun receiving 100s of bounce notices
a day. It appears that someone forged her return address on a spam
campaign, because it doesn't look like the messages actually came from
malware on her computer. This same thing happens to me every once in a
while, but it seems to last only a day or two... I have a suspicion it
may be very prevalent. I have two questions about this.

First, what is the best way to be sure that the messages don't originate
from her computer? I checked it with Kaspersky, AVG and HiJack (it's a
Win XP Pro box) and see no infections, and the headers of the bounced
messages don't contain references to her email server, but...

Second, other than the annoyance of these blasted messages bouncing
back, is there a potential blacklisting problem relating to her email
address?

Thanks for any help you can offer.