Enable SSL on Incoming Email Server:
Browse Homepage, click on “Settings” tab.
Under setting menu, click on “Mail, Contacts, Calendars”
Choose the email account you wish to secure with SSL.
Now, tap on email address under “Account”
Tap on “Advanced”.
Slide down to turn on “Use SSL” section usually found under “INCOMING SETTINGS”. If you use IMAPthen port to “993” and for POP, use port “995”.
Enable SSL on Outgoing Server:
Now go back to “Account” and click on “SMTP” under the “OUTGOING MAIL SERVER”.
Tap the primary server, where domain server name is assigned.
Enable “Use SSL” ON.
Make sure Server Port is “465”.
Tap “Done”.
Now restart iPhone to take SSL effect on your device.