Configuration Instructions for Mail.app (Mac OS X) :
Step 1: Launch your Mail application and then
click Mail and select Preferences
as seen below:
Step 2: Click on the Accounts
icon to get the following screen. Then click on the Advanced
tab.
Step 3:In the Advanced screen
at the bottom you will see the checkbox for SSL. Click on the box to
check it and the port should switch to 995, if not
make sure that the Port is 995. In
the Authentication drop-down menu select
Password if not already selected.
Step 4: You can now click on the red button in
the upper left hand corner to close the Preferences
window and your settings will be saved and you will now be POPing
your E-mail over SSL.