full-disclosure - From field spoofing and AV responses

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From: apjohnson at seattleschools.org (Johnson, April)
Subject: From field spoofing and AV responses

Question for the group?

How hard would it be to have the AV software actually check the source
email smtp host, and send an email to abuse@....com for the *actual*
offending smtp server?

The from field is almost worthless at this point.  But the header is
more reliable.  Yes, it *can* be spoofed, but it's significantly more
difficult.

I'm nearly buried in false 'AV' responses - and worse, the users that
get them are terrified because they think they've  'become infected'.  I
don't mind the user being wary, but the level of fear and anxiety over a
false notice is becoming unworkable.

Just Curious,
-apjohnson (CISSP, CCNP, SCSA)
Network Operations - Security