MAC-Apple Mail
Open the Apple Mail application. Click on the "Mail" drop down menu, and select the "Preferences..." option.

Select the "Accounts" option from the top bar. NOTE: If the top bar does not show as seen in the image, click on the grey oval button in the top right hand corner of the window, this will cause the top options to display. Under the "Outgoing Mail Server (SMTP):" option, click on the "Server Settings..." button. In the new pop-up enter your mail server, which should be mail.mydomain.com (replace "mydomain.com" with your domain name). Under "Authentication:" select Password. In the "User Name:" field enter the user name formatted in This email address is being protected from spambots. You need JavaScript enabled to view it. (replace account with the name or word that appears in front of the '@' symbol, and replace mydomain.com with your domain name). Enter your password in the password box.

Click "OK", then close the Account window by clicking on the red circle.
Open the Eudora email client.
Click on the "Tools" menu at the top of the screen, and select "Options...".


A new screen titled "Options" will open up, on the "Getting Started" ensure the "Allow authentication" option has a check mark.


Select the "Checking Mail" option from the side menu, ensure the user name option is setup as This email address is being protected from spambots. You need JavaScript enabled to view it.. This should be the similar to your email address, but with a period in place of the '@' symbol. You can check the option "Save password" if you do not wish to re-type your password each time you send.

Select the "Sending Mail" option from the side menu. Ensure the "SMTP Relay Personality" is set to None. Place a check in the box for "Allow authentication".

The first time that you try to sendmail, Eudora should ask for a user name and password. Enter your the same information as was entered into your configuration information, This email address is being protected from spambots. You need JavaScript enabled to view it. and your password.