Open the Email Server Settings from Settings > Configuration > Email Server Settings  - you will see a form like the one shown below:

• Select Exchange from the drop-down list

• Enter your User Name
• Enter your Domain Name
• Enter your email address and then enter in the Password
• Click on Connect to Server to link Donorfy to your email
• Save your settings

Press the 'Send Test Email' button to check your settings are correct - this will send an email to the email address you entered.

If all the details are correct you will get a confirmation message, if there is a problem sending the email you will see an error message including any details returned by your email server.