I didn't think the sasl2-bin package was needed, but someone else suggested I try adding it.
Even with the settings that I had, shouldn't I have seen some messages from the server on the telnet connection? (e.g. remote mail server connecting to send mail to an address where this system is the final destination, so no authentication is attempted) If I telnet to port 25 on other servers, I get a 220 message, and then it waits for some command. On this system, I get no message from the server, and the connection is closed within about a second. ** Changed in: postfix (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1940603 Title: postfix/smtpd: fatal: no SASL authentication To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1940603/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs