How to change the outgoing mail (SMTP) port in Mac Mail

These instructions will show you hot to change SMTP outgoing port number.

1.Open “Preferences” in the “Mail” menu.

2.Click the “Accounts” tab to locate your domain’s email account. Open it.

3.Open the “Outgoing Mail Server” window.

4.Change the number in the “Port” field to 587.

5.Check the “Use Authentication” box.

6.Click “Continue”.

7.Click “Continue” again. Close any remaining open windows.