There may be a time, where you want to use Office 365 or Intermedia in conjunction with your SBS. If you don’t disable the Autodiscover on the SBS, Outlook will attempt to reconfigure itself and point back to SBS based on the Autodiscover settings.

Get-AutodiscoverVirtualDirectory | fl Name, Server, InternalUrl, Identity

This will show you the servers’s Identity to be used in the next section.

Remove-AutodiscoverVirtualDirectory –Identity -identity value retrieved above-

After you submit the change, you will need to press Y to confirm the changes.