[Debian-uk] email sender authentication on Debian

[Stephen Gran]

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On Mon, Apr 14, 2008 at 06:50:56PM +0100, Daniel Pocock said:
>=20
>=20
> Is there a recommended way of setting up SMTP sender authentication on=20
> Debian, particularly with the Postfix package?

Assuming you mean SPF here, probably the simplest method is to use
something like spfmilter with postfix's relatively new milter interface.
That being said ..

> I've noticed that the number of spam messages sent using forged email=20
> addresses from my own domain has been increasing, and I'm keen to stamp=
=20
> it out.

SPF won't actually do all that much for you with this sort of problem.
If you actually control all outbound mail for your domain, you probably
want something like BATV, which is designed to eliminate DSNs resulting
=66rom forged mail.  See http://babel.de/batv.html for details.
--=20
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|  Stephen Gran                  | It is not best to swap horses while     |
|  steve@lobefin.net             | crossing the river.   -- Abraham        |
|  http://www.lobefin.net/~steve | Lincoln                                 |
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