I'm subscribed to an email chat list and after setting up SMTP relay to go through the firewall it appears it is mangling the return-path in the email header causing the chat list to think I'm not a subscriber. Is there a way to shut this off so I can verify if that's really what's going on? This is the mangled return-path:
Return-Path:
The /09556f5541 stuff is what is apparently causing the problem.
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