"E-mails for non-existent users should be rejected at your MX server. This rejection should happen during the SMTP session (in other words - don't put Exchange there), right after your server received the RCPT TO: command. If everything is configured properly you will not see the e-mail at all. Also, this is very "cheap" for your server - a decent server should be able to reject hundreds of these per *second*."

I've said it before, but it evidently bears repeating - block first, filter later.

Category: Spam miscellany
Technorati: Spam SANS+ISC

1. Sean Burgess13/08/2007 14:57:03
Homepage: http://www.phigsaidwhat.com/

Please tell me why Exchange is still considered to be a viable enterprise mail system?

2. Stephan H. Wissel14/08/2007 23:47:26
Homepage: http://www.wissel.net/

herd instinct?

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