On 9/11/2011 3:47 PM, rutra80 wrote:

> Hello, lately I receive spam which looks like coming from my domain,
> sometimes it is spoofed like coming from accounts that don't exist, and
> sometimes from the ones that really do. The only SA rule that it triggers is
> Bayesian one, with nearly 100% probability - it assigns 3.5 points, but my
> rejection limit is set to 4.5 and I'm not eager to lower it. What would be
> the most elegant and technically correct way to get rid of the problem?

1. Require authentication.

2. SPF.

Number 2 is the faster and easier, it implies configuring your mail
server to use it (for sendmail it means using a milter, exim has it
built it).

The recommendation is to use both.
-- 
René Berber


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