The settings you need to enter when configuring your Mac Mail are:

• Your Name - the name that will appear in the "From" field of the emails you send.
• Email Address - the mailbox which will be accessed, i.e. user@yourdomain.com.
• Incoming Mail Server - set this to mail.yourdomain.com.
• Mail Server Type - choose between IMAP and POP, depending on what type of mail protocol you prefer.
• User Account ID - enter the full e-mail address, i.e. user@yourdomain.com instead of user.
• Password - the password assigned to user@yourdomain.com.
• Outgoing (SMTP) Mail Server - set this to mail.yourdomain.com.

Click OK to save the settings and create your mail account in Mail.