RE: Blacklisting your own domain?

If you run your own domain with a small number of users, SPF can be an
effective means to accomplish what the OP is looking to do.  Any larger and
you have to start dealing with re-emailers (i.e. sending an email from
cnn.com and sending it to a user in your own domain).

Frank

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Blake Pfankuch
Sent: Wednesday, August 17, 2011 11:41 AM
To: [email protected]
Subject: RE: Blacklisting your own domain?

I've been using strict SPF validation for this as well on my personal .  I
ran into a single issue with a single server on the outside of my network
that does email alerts based on process status on that server that I didn't
have added to SPF.  As far as blocking *@fqdn, I've done that a few times
too however I've been trying to stick with SPF.

Blake Pfankuch

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of [email protected]
Sent: Wednesday, August 17, 2011 7:57 AM
To: [email protected]
Subject: Blacklisting your own domain?

After having yet another user fall for a phishing scam and giving their
user/pass out to spammers, and the ensuing headaches (delistings, temporary
re-routings, etc), I'm decided to try something really simple in
SpamAssassin:

blacklist_from          *@pil.net

I'm trying to think how this might cause problems, but I can't think of any.

Users that SMTP Auth or POP Before SMTP bypass SA.  Is this fairly common
practice already?  Am I that slow to the game?
--
Eat sushi frequently. - Avi
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-- 
Eat sushi frequently. - Avi
[email protected] is the human contact address.
[email protected] is the list posting address.
See below URL for subscribe/unsubscribe and list options:
http://inet-access.net/mailman/listinfo/list

-- 
Eat sushi frequently. - Avi
[email protected] is the human contact address.
[email protected] is the list posting address.
See below URL for subscribe/unsubscribe and list options:
http://inet-access.net/mailman/listinfo/list