From CIT Wiki

Using a Mail Program to Access OCMail

( Not using a desktop client? Start here to set up your web interface.)

Quickstart Guide

If you're already familiar with setting up your favorite desktop mail client and just want a quick and dirty list of the proper settings, click here.

Text-Only Walkthroughs

If you're pretty familiar with your favorite desktop mail client and just need a quick walkthrough of which settings to put where, try out one of these sets of instructions:
Thunderbird Setup for Windows and Mac OS X
Mac Mail Setup

Detailed Walkthroughs (with screenshots)

If you need a little more detail on setting up your mail client, click on the one you'd like to use below:
Thunderbird for Windows
Thunderbird for Macintosh
Mac Mail Leopard (OS X 10.5)
Mac Mail Tiger (OS X 10.4)
Mac Mail Panther (OS X 10.3)
Entourage (note: support for Entourage by CIT is limited)
Microsoft Outlook 2003 (note: support for Outlook by CIT is limited)
Microsoft Outlook Express (note: support for Outlook by CIT is limited)

LDAP (Oberlin E-mail Directory) Setup

If you're using a desktop e-mail client for the first time, you'll need to configure it to access the Oberlin E-mail Directory.