Thunderbird for Mac requires IMAP connection to access OIT's current Exchange service. Follow these instructions to configure Thunderbird to connect to Exchange.
If you already know how to configure Thunderbird for Mac, use the specifications below to configure for OIT's Exchange service.
Upon opening Thunderbird for the first time a Mail Account Setup window will open.
Make the following changes, then click Re-test:
Exchange is now setup, and you will be able to see mail and folders you have in your Exchange account.