I’ve added a brand new account by way of Mac Mail. The host makes use of port 993 for IMAP, and 543 for SMTP, with the identical username and account for every. I unchecked “Mechanically handle connection settings” and set that up, and Mac Mail has efficiently linked to the SMTP server, however not the IMAP server. I’ve double- and triple- checked that the settings I entered are appropriate. I’ve additionally tried checking “Mechanically handle connection settings”.
Checking the logs, in all circumstances, it is utilizing port 143 for IMAP, ignoring what I’ve entered by way of the UI. From the varied threads on the apple assist web sites, it looks like the UI for this hasn’t labored for developing on a decade.
It is the identical if I add the account by way of the Web Accounts setting within the System Settings app.
So – how can I modify the port utilized by a Mac Mail account? Is there a plist I can edit, or some command I can run from the terminal, to set the port that Mac Mail will use? To be fully clear, I am not searching for any solutions involving the damaged Mac Mail or System Settings UI.
