1. Open Mail and go to the "Mail" menu and click on "Preferences..."

2. Next, select "Accounts" along the toolbar at the top. Then select your account in the list of accounts on the left.

3. Select on the the Outgoing mail server pop-down and hit "Edit Server List..."

4. Under the "Account Information" the server name should already be set to the proper server name (usually something like pop.your-domain.com)

5. Under the "Advanced" tab, set Mail to use default ports option and set Authentication to "MD5 Challenge-Response," then put in the user's email address and password in the fields below.

Then hit OK and exit and save your changes.

That's it! Now your outgoing email should go out without any errors, delays, or having to check your mail first.

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