- Enable the POP3 service.
- Associate POP3 with a certificate for secure communication with SSL.
The certificate I use in my test network has several subject alternative names ("mail", "autodiscover") but not "pop", so I will use "mail" instead, although in practice we would probably use "pop" for clarity. I notice that when I select the option "Secure Logon" for the POP connection the correct certificate was located automatically.
Open SSL binaries
I then attempt to connect on port 995 with this command:
openssl s_client -crlf -connect mail.mitserv.net:995
At first, there is no POP3 subfolder in the Logging folder: