The concept behind the Outlook instructions below:  
You send mail out through your ISP's server. 
You receive mail from your website via our server.

Therefore, your OUTGOING mail server settings are provided to you by your ISP. 
I give you your INCOMING mail server information.

These instructions assume you are setting up a new email account in Outlook to retrieve mail from your website mailserver. 

you already have an account set up, but it isn't working correctly, you can use the screen prints below as a guide to identify what you might have set up incorrectly.   And always check your spelling!

I did the setup below using Outlook 2003.  Your screens may be slightly different but the basics are still the same.

NOTE: To my knowledge, AOL does not let you do this through their service.

1. In Outlook, click Tools/Email Accounts/ then choose "Add a new email account" and click Next.  You will see this screen:

2.  Substitute your name and your domain name and your ISP's  SMTP server in the screens below.
NOTE:  The "Logon Information" should be your website email logon (entire email address) and password (that I have given you). 

3.  After you've done the above, click the More Settings button on the screen above.
4.  Fill out the General tab that will come up, using the example below - but use your mail server address, your company name and your email address.

5.  Click the Outgoing Server tab and here is where you will enter the mail server information given to you by your ISP (Internet Service Provider).   It might be Roadrunner, SBC, Earthlink, or others. On this screen, you use ONLY information provided by them.  Do NOT use your website email address or a password that I give you.      (Your mail always goes out via your ISP.   Sending mail from your pc has nothing to do with your website or me.)

6.  Click the Advanced tab.  If you work on 2 computers, you may want to check the box under Delivery (below).  If you do so, be sure to check the box under that and set the days to 3 or less.  Otherwise, your mailbox might fill up and mail sent to you will start bouncing.

It is a good idea, anyway, to log in to your online mail twice a week to clean out the junk folder, making sure there is nothing of value in it. 

It is a bad idea to use webmail as your permanent mailbox.  Mailboxes are NEVER backed up.  In the event of a catastrophic hard drive crash, all mail in the folder at the time of the crash will be lost forever.

7. Click the OK button to save all these settings and on the original screen, click "Test Account Settings"     You should get all green checks as Outlook connects with our mailserver and then tests sending through your ISP's server.   If not, go back through the instructions above because I won't tell you anything different than what is shown here.

Finally, if you have multiple mailboxes for your website, you would want to repeat the process above for each mailbox (POP3 account).   Or have the mail from those other mailboxes forward to the one you just set up above.