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RE: SPF and HELO

2004-04-22 08:58:52
On Thu, 22 Apr 2004, Philip Tucker wrote:

Have you verified none of the 2525 messages were non-spam?

Yes.  Anyone using my domain name as their HELO name (2419 cases) is a virus
or spammer.  And the same goes for the other 106 cases - anyone using my
customers domain name as their HELO name while sending from comcast.net is a 
virus or spammer.

2525 were rejected because of HELO failing the SPF check.  Of these,
2419 used a HELO with my own domain, and 106 used a HELO with other
domains.  (So just rejecting your own domains from external servers
gets most of the benefit - but SPF generalizes the check and eliminates
a configuration item.)

-- 
              Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.


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