On Mar 12, 2012, at 5:25 PM, m.roth at 5-cent.us 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