Listening on multiple ports

Hi,

I want dovecot to listen for imaps (ssl) on both 993 and a non-standard port 8839.

I've tried using variations on the inet_listener entries in 10-master.conf as shown in a couple of threads on here but none of the attempts have worked.

Can someone provide me with a cut-and-paste solution and confirm into which file it should be placed (i.e. is the dovecot.conf format using the inet_listener = {address} appropriate)?

-- Best wishes, Derek