Re: [Declude.JunkMail] emails do not exist- Declude Sender?

Sat, 23 Aug 2003 21:36:58 +0000

Title: Message
As long as you have your DNS setup correctly for your domains, you can always use the SPAMDOMAINS test since e-mail that claims to be from [EMAIL PROTECTED], that is sent from any other mail server but your own, will fail the RDNS lookup.
 
Bill
----- Original Message -----
Sent: Saturday, August 23, 2003 12:10 PM
Subject: [Declude.JunkMail] emails do not exist- Declude Sender?

Hi;
 
What is the best way to block email from Senders that do not exist in our domain?
 
e.g.
 
we have received several spam from:
 
 
none of these users exist.  We have a weight for VALFROM test from IMail but other than REVDNS which is not controllable for those on the road how can a test be defined that adds weight for users that do not exist in our database of users?
 
We can define a filter for MAILFROM - I guess one way is elevate all domain emails and then negative weight a filter of valid emails.  Any other way?
 
Regards,
Kami

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