OS X Catalania built in mail client won't work with HMA

Regular Visitor

Setup HMA with my exchange 2013 server.  Windows Outlook and ActiveSync work fine.  I'm using Google as my IDP.  When I setup the native mail client on my Mac, it gets all the way through the authentication and when I click OK, it goes to a Gray screen and then just sits and spins.  If I use an EXO account everything works fine.  What would be causing the Mail app not to complete the login to my on-prem server but works fine with an EXO account?

 

HTTP/1.1 403 Forbidden
Cache-Control: private
Server: Microsoft-IIS/8.5
request-id: 05bf0794-8d75-4fa4-9bf3-bfa55ae025d3
Set-Cookie: ClientId=JCA0Z9ZKEVWUHGBFJJA; expires=Fri, 29-Oct-2021 13:40:06 GMT; path=/; HttpOnly
X-CalculatedBETarget: exchdb02.ca.com
x-ms-diagnostics: 2000008;reason="The token contains not enough scope to make this call.";error_category="invalid_grant"
Strict-Transport-Security: max-age=31536000

 

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