On Mar 12, 2012, at 5:25 PM, [email protected] wrote:

> Here's a question: is there any way to inspect an email's headers, and
> reject it if the alleged FWDN in the From:" doesn't match the oldest
> "Received: "?

That would be problematic with dual homed mail gateways that received on 
internal interface and delivered on external interface that had different host 
names on each.

-Ross

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