Personal domain email using Outlook.com on Apple Mail
To set up your Mac Mail to sync your Outlook.com account’s email:


Open Mac Mail.
From the File menu, choose Add Account…
Input your account information. 
Choose Account Type: IMAP.
Input the following as the Incoming Mail Server: 
imap-mail.outlook.com. (or in your case imap-mail.yourdomain.com
Choose to Use Secure Sockets Layer (SSL) and Port: 993 for incoming mail security.
Input the following as the Outgoing Mail Server: smtp-mail.outlook.com. (or replace outlook with your domain name)
Choose to Use Authentication.
Choose to Use Secure Sockets Layer (SSL) and Port: 25 for outgoing mail security.