Fresh Debian 10 install a couple days ago. First thing I wanted to do is get email set up. Everything went smoothly. Set up user. Set up a mail client. Can receive mail just fine. However all outgoing mail gets stuck in queue.
Some queue entries say delivery temporarily suspended. All of them say connection timed out. I’m new at administering email. Getting a server to deliver mail to the user is a big win for me. But I’m at a loss as to where to start with getting user’s outgoing mail delivered.