I am attempting to set up an email gateway in v12.0.0 and IMAP works fine but cannot send SMTP traffic. I am successful via other SMTP clients so the mailbox itself is set up correctly. The VARA log only seems to display the not particularity helpful message '06/07/2025 22:43:31 - Error sending email to <redacted >through Email gateway: The operation has timed out.' Is there a way to see any more detail about the transaction (beyond 'timed out') without having to resort to Wireshark?
Thanks -
I think I figured out the problem, which may be a bug in VarAC.. What I see with Wireshark is VarAC establishing a TCP connection with the mail sever and then doing nothing, instead of sending a Client Hello message when port 465 (SMTPS) is selected. Then VarAC times out and closes the connection.
I think what is happening is that VacAC is fixed in STARTTLS mode (as wold be used with port 587) and is waiting for a Hello message from the server, and not hearing one times out. This is the correct mode of operation for port 587 (STARTTLS) but not 465 (SMTPS) , which some mail servers still use. What should happen is that VarAC should look at the TCP port selected for SMTP service and choose the protocol accordingly. Please let me know if I can be of any assistance in testing.