[Mimedefang] Differentiating multiple sendmail instances

[Philip Prindeville]

  Ok, so I have the following scenario:

(1) I'm running a sendmail in "local submission mode" and another as a "relay" (587 and 25), respectively.

(2) I'm behind a NATting port-forwarding firewall, and based on various criteria I'll port-forward to different instances of sendmail all running on one host (i.e. one instance with its own config on 2500, another instance with its own config on 2501, etc.... up to 2549).

I need in both cases to be able to have Mimedefang differentiate which instance of Sendmail is invoking it, and apply certain tests conditionally.  And I need to be able to do it starting with filter_relay().

How do I do this?

Thanks,

-Philip