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Old 07-20-2006, 05:43 PM   #1
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Registered: Jul 2005
Distribution: Debian
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Postfix: bouncing non-existing virtual aliases

Hey guys,
I am attempting to get a Postfix mail relay server set up to accept emails from Exchange whos recipient addresses Exchange doesn't recognize, match them to a virtual aliases table entry, change headers and relay it back to Exchange for delivery to the Internet. I know Exchange can do its own aliasing, but we ran into some limitations with what kind of addresses it could pair up.
My current problem is that along with all the @company email that comes to Postfix is other mail that made it past our spam filters upstream, and I haven't been sucessful in being able to generate bounced emails for those. All I can figure out is how to respond with smtp rejects as if MTAs were connecting to Postfix directly. Anyone been here and know how to do this level of filtering and specifying what recipient addresses to bounce?



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