Setting Up SMTP Authentication In Your E-mail Programs

Instructions are shown below for Thunderbird, Apple/Mac Mail, and Outlook Express.


  • Go to "Account Settings" under the "Tools" menu.
  • Select the "Outgoing Server (SMTP) option.
  • Select the "Edit" button for the account you want to edit.
  • Under "Security and Authentication" is a checkbox for "Use name and password". This enables SMTP Authentication -- make sure that checkbox IS selected, and enter your username in there. (Your username is your full e-mail address.)

Apple/Mac "Mail":

The following instructions are for the Apple Mail application:

  • Select "Preferences" from the "Mail" menu.
  • Once you are in the Preferences, click the "Accounts" icon at the top of the preferences pane. Then, click the desired account from the menu on the left.
  • Click the "Server Settings..." button located near the bottom of the right side, below Outgoing Mail Server (SMTP).
  • In the resulting window, type in the "Outgoing Mail Server:" field. (Use your own domain name there instead of "")
  • In the drop-down menu next to "Authentication:", choose "Password."
  • In the username field, type your username (your username is your full e-mail address including the domain name).
  • In the password field, type your password for that e-mail account.
  • Click OK to activate the SMTP authentication.

Outlook Express 5.0 - 6.0+:

  • From the Tools menu in Outlook Express, choose Accounts.
  • Select your e-mail account in the "Account" list.
  • Click "Properties".
  • Click the "Servers" tab.
  • In the "Outgoing" mail (SMTP) field, type the name of the SMTP server (user
  • Check the box next to "My server requires authentication".
  • Click "Settings".
  • Select "Log on using".
  • Type your full e-mail address in the "Account Name" field.
  • Type your password into the "Password" field.
  • Check the box next to "Remember Password" IF you want your password saved.
  • Click "OK"


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