spamassassin-users January 2011 archive
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spamassassin-users: Re: How to prevent DOS_OUTLOOK_TO_MX false p

Re: How to prevent DOS_OUTLOOK_TO_MX false positive?

From: John Hardin <jhardin_at_nospam>
Date: Wed Jan 05 2011 - 16:18:11 GMT
To: users@spamassassin.apache.org

On Wed, 5 Jan 2011, George Spelvin wrote:

> I'm having trouble with intracompany e-mail. When a Windows/Outlook user
> sends mail to a local user, there is exactly one MX in the path.
> Which is the office mail server.
>
> Everything is wonderful until Spamassassin sees the short delivery path
> and assigns 2.8 points because of it, and a few other minor scores push
> it over 5.0.
>
> Should I just manually stomp on that score, or is there are more
> subtle way to prevent this false positive? (I could, for example,
> add a compensating negative score for sender IP addresses in our range.)

The best way is to tell your glue layer not to pass internal-to-internal
mails to SA in the first place.

What is your MTA (I'm assuming qmail) and how is SA hooked into it?

-- John Hardin KA7OHZ http://www.impsec.org/~jhardin/ jhardin@impsec.org FALaholic #11174 pgpk -a jhardin@impsec.org key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79 ----------------------------------------------------------------------- 12 days until Benjamin Franklin's 305th Birthday