Author: Ian Eiloart Date: To: Andreas Metzler, exim-users Subject: Re: [exim] Exim4 + greylistd + spf
--On 17 August 2006 10:40:36 +0200 Andreas Metzler
<eximusers@???> wrote:
> Aurélien Fernandes <aurelien.fernandes@???> wrote:
>> A few months ago I installed Ex Exim 4.5-8 + Clamav + Greylist on
>> my Debian Sarge. When i started to get spams coming through the greylist
>> I decided to install SPF as first filter.
>
> SPF is no Anti-Spam measure. It is just a way to enforce that e-mails
> using certain senders can only be sent from certain hosts.
That's a useful way of reducing spam from certain trusted domains. For
example, I'd be more inclined to trust email from a .ac.uk domain if it
matched an SPF record. It's not that spam never originates from such
sources, but I'd expect there to be a responsible postmaster who I could
contact.
