On Fri, 20 Jun 2008, mouss wrote:

John Hardin wrote:
 On Thu, 2008-06-19 at 20:54 -0700, John Hardin wrote:

> header XX Received =~ /from \S+\.svcolo\.com (\S+ \[10\.\d\.\d\.\d\]) > by arran\.svcolo\.com (/
>  score  XX  -5

 Oops. Need some plusses in there...

 /from \S+\.svcolo\.com (\S+ \[10\.\d+\.\d+\.\d+\]) by arran\.svcolo\.com (/

What happens if such header was forged?

Then the message gets -5 points added to it's score.

How likely is a header forged with that particular data going to be sent in a message to that particular SA host?

If that's a concern then add a rule to verify that the SA host received the message from the relay, use a meta to AND them, and score the meta rule at -5.

--
 John Hardin KA7OHZ                    http://www.impsec.org/~jhardin/
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