Are you using Mail to check your UWM email? Want an easy way to look up your professor's email or even a classmate's? This is the solution for you.
Open the "Address Book" program, then open the preferences under the "Address
Book"
menu.
Click on the "LDAP" button.

Click on the "+" button
Name the server UWM LDAP
Server: ldap.uwm.edu
Search base: o=uwm.edu
Port: 389
Scope: subtree
Authentication: None
User name and Password are not necessary.

Click save.
Now when you compose a message in Mail and
type in someone's last name it will automatically pull up everyone at
UWM with that
name.