My external interface has several alias IPs (for several internal servers).
It seems that the Email Protection automatically binds to all these IPs. How can I make sure that it replies only to one of them? The obvious method (Network Protection - Firewall - new rule "Any-SMTP-Interface reject") did not work (I guess that's one of those thiungs to prevent admins from locking themselves out). Another attempt (DNATting SMTP on one alias-interface to nirwana) worked too well - it blocks all interfaces.
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