Watermarking

[Jason Ede]

From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of --[ UxBoD ]--
Sent: 12 April 2010 16:12
To: MailScanner discussion
Subject: Re: Watermarking



From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of --[ UxBoD ]--
Sent: 12 April 2010 14:55
To: MailScanner discussion
Subject: Re: Watermarking

Hi,

I really like the watermarking and find it useful and currently have it set to add 3 points to the SA score. I was wondering if there is an easy way to get it to appear as a SA rule rather than just adding to the score? It’s easier to explain if it is in a spam report than having to explain the SA score is 3 points high because of something you can’t see...

I was thinking of a SA rule based on a header that is set if the message fails watermarking? Then I can turn off the rule in MS itself and just let SA mark the mail.

Jason

Why would you wish to add 3 points to the score ? I thought that watermarking was to prevent backscatter plus the ability to bypass spam checks if the email originated from your server.  Would you not wish to reduce the score by 3 points if the watermark was valid; unless I am missing something ?

--
Thanks – Phil

Currently we don’t outright reject emails without a watermark as some of our users still send email via other means and we don’t have a way of preventing that at the moment. I could exclude their domains from watermark checking, but until then its easier to add a few points to the spam score and let that and the other SA ratings take care of it.

Jason


Jason, I see where you are coming from now ... Looking at the code I do not think it would be that difficult to add this in; similar to the way SaneSecurity sigs etc are handled.  Let me perform a bit more research and will see if I can get a patch together.

Thanks, Phil



I can see the code where it checks and I can see how I can amend the code to take the option of ‘header’ instead of spam score etc, but how do I add a header to the header array?

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