In Outlook select Tools -> E-mail Accounts...
Select Add a new e-mail account and click Next >
Select IMAP and click on Next >
If you would still like to use POP, refer to POP3 or IMAP
Next fill in all the boxes correctly:
Your Name: First and Last name
E-mail Address: username@csulb.edu
Incoming mail server: imap.csulb.edu (or popmail.csulb.edu)
Outgoing mail server: smtp.csulb.edu
User Name: username
Password: your password
When done click on More Settings ...
Click on the Outgoing Server tab.
Place a check in the box "My Outgoing server (SMTP) requires authentication" and make sure "Use same settings as my incoming mail server" is selected.
Click on the Advanced tab and under "Server Port Numbers" enter 587 for "Outgoing server (SMTP)" and click OK
Finally click on Finish and Outlook is set up to connect to the campus email system