Autodiscover in Outlook is a big improvement when creating our account settings. If your company’s DNS settings for Autodiscover is not set correctly, Autodiscover will reset your custom settings under Advanced Settings. When this happens Outlook will fail to connect.
For example, a user reported the following:
I set the Exchange Server to be: https://mail.microautomation.com
and after it connects, the URL changes to: https://mail.microaut.com/EWS/Exchange.asmx
The fact that this is happening implies that the Autodiscover response for this user’s server is incorrect. However, there is a workaround using Applescript. Once Outlook is running, launch the AppleScript Editor and run the following script:
tell application "Microsoft Outlook"
set background autodiscover of exchange account "NameOfAccount" to false
Replace “NameOfAccount” with the actual name of the account. Once this is run, Outlook should no longer replace the server URL.