How do I add an account OS X Apple Mail?

1. Under Mail open Preferences then choose accounts
   
   
   
   
2. Select either Add Account or Edit Account
   
   
   
   
3. When the Account screen pops up, as showEmail Address, Name, Incoming Mail Server (e.g. mail.yourdomain.com), Username and Password. Choose the apporiate Outgoing Mail Server, if none are listed then see the next step. Set the Advanced options as desired.
   
   
   
   
   
   
4. After you have entered all of the other Account information then choose Options. You will then have the SMTP Option screen pop up as shown below. You will need to make sure the outgoing mail server is set correctly. Set other options as needed.
   
   
   
   
5. That's it! You're done.

NOTE: The next time you try to send mail, you may get an error message saying that the address is not acceptable to your server. You will be asked to try again using the outgoing address provided. Click on that address, and your mail should go through this time.