Select the Add Account button in the middle of the screen, then Account Settings
Insert your email address
Select Advanced options, then select Let me set up my account manually > Connect
This temporary screen will display
This screen will display the various account options – select IMAP
Server Settings: (Note that some versions of Outlook don’t allow you to adjust server settings at this stage. In these cases, complete the account setup and then check your server settings by going to File > Info > Account Settings dropdown > Server Settings).
Incoming mail: add mail. before your domain name e.g. mail.example.co.za
Port 993 (not 143)
Encryption method: SSL/TLS
Require logon using Secure Password Authentication (SPA) is not selected
Outgoing mail: add smtp. before your domain name e.g.smtp.example.co.za
Change Port to 465 (not 25)
Encryption method: SSL/TLS
Require logon using Secure Password Authentication (SPA) is not selected