Vince, when adding POP/IMAP ports you'll add them like this:
IMAP
Port: 143
IMAP SSL
Port: 993
POP
Port: 110
POP SSL
Port: 995
This prevents the warning regarding having two ports with the same port number, and these are the default port numbers chosen by mail clients when setting up a mail account.
Kyle Kerst
IT Coordinator
SmarterTools Inc.
www.smartertools.com