You can set the used SSL port via logging in as the Administrator user account.
- Go to Administration > Settings > System Settings
- Click on the 'Configure' button
- Under the section 'Reports and Alerts' populate the 'Fully Qualified manager Name'
The format is <fully qualified manager host name>|<manager host ip>}[:<ssl port number>]
So if the Enforce server name is 'test' and the SSL port is 123 then the entry should be test:123
Now, whenever reports are being sent out, the reference will point back to the server name (or IP) including the referenced port. In the above example it would reference https://test:123
Please note that when no port is specified, the https reference will use the default port 443.