Dan Stromberg:

I'm trying to get dovecot configured to:

1. Only do imaps
2. Do imaps on port 500

I've tried "ssl_listen = *:500" both globally and in my "protocol imap" section, but neither seems to be working.

Is there a way of doing this?

What you're trying works for me, but I did find out that some mail clients support IMAPS only on the default IMAPS port (993). When instructed to use another port with SSL, these clients set up a plain connection (which fails, of course) and then try STARTTLS (if you enable plain traffic on that port).

Regards, Jeroen.