We process a large number of emails ( upto 3 million a day ) on a load
balanced array of servers for spam checking
The maximum number of spams we receive are from ( in sorted order ) from
singular domains in the envelope sender
1) earthlink.net
2) hotmail.com
3) yahoo.com
4) netzero.com
of these hotmail and netzero have SPF records.
I have enabled spf policyd in postfix. But that is giving me no benefit
because all these big domains publish neutral records
So what is the point in doing spf checks at the MTA. I would better do
them at spamassassin and use them for scoring
Or can I configure policyd to reject SPF_NEUTRAL for hotmail.com.
How can that be done, ( what about non compliance to SPF )
Thanks
Ram
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