Help with Autodiscover either URL method or SRV, no successful tests uing testexchangeconnectivity.com

I cannot get a successful test using https://www.testexchangeconnectivity.com

I created my SRV: _autodiscover   _tcp  domain.com  0   100  443   autodiscover.domain.com but that is not working and our provider is not much help with SRV records.

Testing potential AutoDiscover URL is successful up until this error:

Attempting to send AutoDiscover POST request to potential autodiscover URLs.
     Failed to obtain AutoDiscover settings when sending AutoDiscover POST request.
     Test Steps
     Attempting to Retrieve XML AutoDiscover Response from url https://autodiscover.domain.com/AutoDiscover/AutoDiscover.xml for user username@domain.com
     Failed to obtain AutoDiscover XML response.
     Additional Details
     A Web Exception occurred because an HTTP 401 - Unauthorized response was received from Unknown

I dont care which works, if I can get either method working it would help to complete my migration.

Thanks.