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[David H.]

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Hancock, Scott wrote:
> Matt, 
> 
> 
>>>SPF - I haven't looked into this yet.  Should I start here?
> 
> 
>>SPF would work very well for this. Forgery detection is really what
> 
> SPF  is designed to do.
> 
> It looks like I should learn more about SPF before going the custom rule
> route.

Actually you should first look into the Custom Ruleset. While SPF is a nice
thought it does not work at all. I have seen enough messages that have been
marked as valid Spam and had a SPF_PASS header in them.

- -d
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