If you haven't checked your mail with Mac Mail before, open the program and click the Mail menu, then choose "Add Account..."
Mac Mail will ask you what type of mail account you have. Select Exchange and click Continue.
Enter your name, your full email address, and your password. Then click Continue.
Mac Mail will attempt to connect to the exchange server. If all goes well, your next screen should look like this:
Choose which items you'd like to sync, and click Done.
Your mail account is now set up!
If you are already using Mac Mail with your Butte College email account, you must remove your account and re-create it: