This article explains how to adjust mail settings for an email address you have already configured. These instructions explain how to adjust the following:
Host Name
Port number
TLS/SSL (on/off)
Authentication method
This article uses IMAP examples.
Big Sur, Mojave, and Catalina
In the top menu bar click Mail.
Select the Preferences option.
Click the @ Accounts option in the top bar.
Click the Server Settings tab.
Edit the Incoming/Outgoing Host Name fields to match your Osirion server names (generally mail.yourdomainname.co.za)
To edit the Incoming/Outgoing ports, UN-check Automatically manage connection settings. The Port field and Use TLS/SSL checkbox then appear. Edit as needed. It's recommended to use incoming values of port 993 for IMAP and 995 for POP. When finished, click the Save button.
Sierra and High Sierra
Open the Apple Mail application by clicking Mail in the top menu bar.
Select the Preferences option.
The Accounts page opens:
Click the @ Accounts option in the top bar.
Click the Server Settings tab.
Edit the Host Name fields to match your Osirion server names (generally mail.yourdomainname.co.za)
To edit the Incoming/Outgoing ports, UN-check Automatically manage connection settings. The Port field and Use TLS/SSL checkbox then appear.
El Capitan
Open the Apple Mail application by clicking Mail in the top menu bar.
Select the Preferences option.
The Accounts page opens:
Here you can edit the incoming server name. (generally mail.yourdomainname.co.za)
To edit the port number, click the @ Accounts option in the top bar.
Click the Advanced tab in the upper right.
Edit the incoming Port number and enable/disable SSL by selecting/deselecting the Use SSL box, as needed.
Editing pre-existing SMTP (Outgoing) settings in El Capitan
Open the Apple Mail application by clicking Mail in the top menu bar.
Select the Preferences option.
The Accounts page opens:
Click the @ Accounts option in the top bar.
Select your outgoing mail server from the available options within the Outgoing Mail Server (SMTP) drop-down list. (This should generally be mail.yourdomainname.co.za).
Click the drop-down again and select Edit SMTP Server List...
The Account Information page opens:
Click the Advanced tab.
Edit the incoming SMTP Port number and enable/disable SSL by selecting/deselecting the Use SSL box, as needed.
Make sure 'Password' is selected in the 'Authentication' drop-down.
