1. Open Netscape Communicator.

2. Click on the "Help" menu (or the Apple Menu if you're using a Macintosh), and select "About Communicator".

3. If a screen comes up and reads "Netscape® Communicator 4.0, 4.01, 4.02, 4.03, 4.04, 4.05, or 4.06, please follow step 4. If a screen comes up that says "Netscape® Communicator 4.5, 4.51, 4.6, or 4.61, then proceed to Step 5.

4. Click on the "Edit" menu across the top of Communicator, and click on the "Preferences" item. You should see a screen that looks similar to Figure 1 below. On the left hand side, you should see a tree of options, with plus (+) and minus (-) signs in front of them if you're using a Windows computer, or triangles () if you're using a Macintosh. Identify the category in this tree that is labeled "Mail and Groups" or "Mail and Newsgroups". If you're using a Mac, click on the Triangle so that it is pointing down (). If you're using a Windows computer, click on the plus sign (+) so that it turns into a minus (-) sign. More options should appear. Click on the option that is labeled "Mail Server" (this is circled in red in Figure 1). The options on the right hand side should change to show the mail server user name, outgoing mail server, and incoming mail server. The Outgoing mail server is the box that needs to be changed if its contents read either "mail.kearney.net" or "mail.unk.net". Delete the mail.kearney.net or mail.unk.net from the Outgoing Mail Server box, and in its place (using all lower case letters with NO spaces), type smtp.kearney.net. This is also circled in red in Figure 1. Click the "OK" button. Do these steps, and you're done.
 

Figure 1: The Email Preferences in Netscape Communicator 4.0x

5. If you're using Communicator 4.5 or greater, follow these steps. Click on the "Edit" menu across the top of Communicator, and click on the "Preferences" item. You should see a screen that looks similar to Figure 1 below. On the left hand side, you should see a tree of options, with plus (+) and minus (-) signs in front of them if you're using a Windows computer, or triangles () if you're using a Macintosh. Identify the category in this tree that is labeled "Mail and Groups" or "Mail and Newsgroups". If you're using a Mac, click on the Triangle so that it is pointing down (). If you're using a Windows computer, click on the plus sign (+) so that it turns into a minus (-) sign. More options should appear. Find the item in this tree of options that is labeled "Mail Servers", and click on it. The options on the right hand side of the screen should change. A little more than half way down, you should see a box with the label "Outgoing mail (SMTP) server". In the box, if you have either "mail.unk.net" or "mail.kearney.net" typed in, delete it. In its place, using lower case letters and NO spaces, type smtp.kearney.net. These steps are circled in red in Figure 2 below. After you have finished, click on the "OK" button. Do these steps, and you're done.
 

Figure 2: Netscape Communicator 4.5 and 4.6 email preferences screen.