Listening on multiple ports

[Derek Harding]

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