How can I deal with this trash that was not realy sent from Yahoo? We have to add a neg weight so legitimate email does get from Yahoo, but I get stuff like this every day:
One option might be to set up a filter with the following lines:
MAILFROM 8 CONTAINS @yahoo.com REVDNS -8 CONTAINS .yahoo.com
With these, E-mail with a return address of @yahoo.com will get a weight of 8, unless it comes from a yahoo.com IP address.
The disadvantage to this it that it would give a weight of -8 to E-mail from a valid yahoo.com mailserver that was sent with a non-Yahoo return address.
-Scott
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