I believe it does a DNS lookup on everything after the @ in the envelope
mailfrom.
It can false positive for me when the mailfrom uses subdomains.
In general I would term it an effective test, though it doesn't trigger on a
lot of spam.
----- Original Message -----
From: "Stan Buck" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, June 14, 2006 8:39 AM
Subject: [Declude.JunkMail] MAILFROM test
Can anyone tell me more detail about how the MAILFROM test works? It has
suddenly (June 2) started to catch email that it ignored before. I can't
detect any sigificant difference in the headers before and after.
Stan
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