pe...@easthope.ca wrote: > Until exim connects to the smarthost with implicit TLS, I think of > having a non-TLS MUA send messages to the smarthost directly through > the stunnel tunnel. As mentioned a few days ago, the analogue for > POP3 works with no difficulty. > > If I try to remove exim, the system will complain about absence of > MTA. So I think of leaving exim installed. It uses port 25 for local > submission. > > What port is suggested for submission through the tunnel? Any unused > port in the dynamic, private and ephemeral range? Eg. 49160?
You can use any port you'd like, but 465 and 587 are already allocated for similar purposes -- 465 should have TLS turned on, and 587 should be plaintext with StartTLS support if possible. -dsr-
