SMTP AUTH for Mac OS X Leopard (10.5)

Note: This is still a work in progress.



MacOS X 10.5 (Leopard) apparently changed the way uses SMTP auth. Personally I don't use for various reasons, but I thought I'd help those who do by writing this quick guide to help you set up SMTP AUTH in


To properly set up SMTP AUTH for use with SDF, perform the following:

  • Open
  • In the Mail menu, select Preferences
  • Click the Accounts tab
  • Select the account on the left you wish to edit
  • On the Account Information tab, find “Outgoing Mail Server (SMTP):”
  • Click the arrows for the dropdown menu, and select Edit Server List…
  • Make sure the server you wish to use is selected in the list, and click on the Advanced tab
  • In the Authentication dropdown, select “MD5 Challenge-Response”
  • Type in your SDF username in User Name field
  • Type in your password in Password field
  • Click ok, and close the Preferences window.

You should now be set up to use SDF's SMTP server. Enjoy!

Bugs, Comments, Etc.

Bugs in this document, comments, questions, concerns, etc (but regarding this document only please) should be directed to ajgraves at this domain. Alternatively, if you are a MetaARPA member, you can change the tutorial yourself :)