On Thu, 2009-05-14 at 13:40 +0200, David Saez Padros wrote:
> Hi
>
> >> we use callbacks on a similar way, we do not do the callback
> >> if the incoming mail passes spf, dkim is not used to prevent
> >> callbacks because we do callbacks at RCPT time and dkim needs
> >> to reach DATA, we also use whitelisting to prevent callouts too
> >
> > Can I ask why you don't do the call backs in DATA then? If I were to use
> > callbacks, personally I'd want to make sure they were run at the very
> > end of my spam filtering to reduce the likelyhood of my server being
> > listed on an RBL for backscatter...
>
> it takes less resouces to do the callback at rcpt than at the very
> end of the spam filtering (but we do callouts at the end of all
> rcpt checks). You can reduce the chance to get listed on a RBL by
> using spf, whitelists, etc .. (calloouts also have it's own cache)
> we have been using callouts since they exist without ever being
> blacklisted
>
I think you will find that the MX's for ols.es are indeed listed at
backscatterer.org :
Testresult for 78.129.233.52:
This IP IS CURRENTLY LISTED in our Database.
Testresult for 82.98.132.208:
This IP IS CURRENTLY LISTED in our Database.
And have been listed on and off for a while.
John.
--
---------------------------------------------------------------
John Horne, University of Plymouth, UK Tel: +44 (0)1752 587287
E-mail: [email protected] Fax: +44 (0)1752 587001
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