Zitat von Ansgar Wiechers <li...@planetcobalt.net>:
Hello list I'm aware of two ways to verify recipients when relaying mail to upstream Exchange servers: - Export recipient addresses from AD and use that list as $relay_recipient_maps. - Use an LDAP query in $relay_recipient_maps. I seem to recall that there was a third option where Postfix would probe the nexthop before accepting the mail, but was unable to find it in the list archive. Can someone refresh my memory? Or did I mis-remember that?
As always the really fine documentation is of help: http://www.postfix.org/postconf.5.html#reject_unverified_recipient Regards Andreas
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