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Re: [milter-greylist] Spammers vs. SPF

2005-03-25 by Matt Kettler

Matthias Scheler wrote:

>	Hello,
>
>a while ago Emmanuel Dreyfus predicted that SPF will become useless
>quite quicky. Here is the proof:
>

As an anti-spam tool, SPF has been useless since the start anyway.
Fortunately, SPF isn't an anti-spam tool, it's an anti forgery tool.

Those who continue to fail to understand the difference between these
two concepts miss the point of SPF entirely.

>Mar 23 18:11:41 *** sm-mta[22869]: j2NHBe7b022869: from=<Control-1066-82345335-Vis@...>, size=6349, class=0, nrcpts=1, msgid=<82345335.230305085833.1066@...>, bodytype=8BITMIME, proto=ESMTP, daemon=MTA, relay=client230.beta-ca.bsm1mx.com [69.25.109.230]
>
Since Emanuel questioned if it was spam or not, I'll point out the
spamhaus records
http://www.spamhaus.org/SBL/sbl.lasso?query=SBL20650

>I guess I'll have to disable SPF support in my "greylist.conf" soon.
>  
>
I never enabled it. It seemed foolish as any spammer can just create a
SPF record allowing all IPs. If people start ignoring "ip4:0.0.0.0/32"
then they can always update it to  "ip4:0.0.0.0/31 ip:4128.0.0.0/31"

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