Les Mikesell lesmikesell@gmail.com writes:
One of my choices of tests on an inbound relay machine has been to check that the user exists using an smtp check against the internal delivery host. How would I do that on an MTA that does not handle milters?
Milters are bad for rcpt verification (at least in sendmail) because they happen before alias/virtusertable expansion. Custom 'Local_check_rcpt' rules plus tables like
| Kdom0_lookup hash -o /etc/mail/dom0-users | Kdom1_lookup socket inet:480@mail-filter
are better and easier to implement.
Enrico