>With the aid of IMAnalyzer I have noticed that I have a user who is sending
>E-mail without using a from address:
>
>11:15 17:32 SMTP-(000000C0) >MAIL FROM:<>
>11:15 17:32 SMTP-(000000C0) 250 null sender <> ok
Imail has a filter to block null senders, but it's per-server, and in
practice, bounced mail comes back with null sender so you don't
really want to reject mail bounced back to you with a null sender filter.
Try a policy/political solution. Maybe it's just user ignorance
rather than conscious obfuscation.
Len
http://BIND8NT.MEIway.com: ISC BIND 8.2.2 p5 & 8.2.3 T6B for NT4 & W2K
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