block by header information

Paulo Roncon paulo-m-roncon at
Thu Aug 26 03:35:26 IST 2010

Hello all, 

anyone knows how can I block emails by header content (IP)? I dont want to use spamassassin. What I really want is to blacklist emails based on some info on the header.
This normally is done at MTA level but i have a particular situation where this is not possible.


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