[Mimedefang] Using MD to defeat spam with embedded far-east URI's

[Matthew Hall]

> So my question is can this be done in MD easily ? What it esentially
> entails would be a filter to shove into an array any URI's appearing
> in the body and then reverse resolve and check against a static block
> list (i.e. all far-eastern classes) or against RBL ?

Well, I think you would need to parse for the URI/URL. Get a
raw IP value for it, and then use MD's relay_is_blacklisted
function, and use one of the RBL's that only returns geographic
codes. From that point, you would have to just match the return
value from relay_is_blacklisted against a known list of IP's
returned from the RBL as being "elsewhere".

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