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Re: SPF and greylisting conditioning

From: fakessh (fakesshfakessh.eu)
Date: Sun Sep 26 2010 - 16:28:37 CDT


Le dimanche 26 septembre 2010 22:38, mouss a écrit :
> Le 26/09/2010 12:08, Stan Hoeppner a écrit :
> > Michal Bruncko put forth on 9/26/2010 4:24 AM:
> >> It is possible in some way to configure postfix, that SPF Passed mails
> >> will be automatically accepted with postfix without greylisting?
> >
> > If I may be blunt: this is a really dumb idea. Many, maybe all,
> > snowshoe spammers have valid SPF records. Thus, accepting mail simply
> > because the connecting IP passes SPF muster isn't a bright idea.
>
> some even use an indirect +all to trick filters...
>
> $ host -t txt takeprettypictures.net
> takeprettypictures.net descriptive text "v=spf1 ip4:128.0.0.0/1
> ip4:0.0.0.0/1 -all"
>
> (so the first bit must be 0 or 1. since a bit is either 0 or 1...).

do you like sendmail machine
that adresse is unauthorized for me

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