MacOS – Apple Mail using El Capitan

macos

I receive incoming emails but cannot send out. They stay in the 'Out' box. In Mail Preferences it says 'Outgoing Mail Server (SMTP) – in the slot is 'concordmedia.org.uk I am using IMAP system.

Best Answer

Not a lot to go on, but here are the steps I follow:

Is there a guide from your organization that explains how to configure Apple Mail or even a configuration profile so you can enter the settings perfectly without having to enter them manually?