Autodiscover case-sensitive

[Ralph Seichter]

* William Edwards:

> That's why I think this should perhaps be 'fixed' in automx2.

I have spent more time digging, and I still don't think it needs fixing
in automx2. RFC 3986 states [1] that URI "generic syntax components are
assumed to be case-sensitive unless specifically defined otherwise by
the scheme", and Microsoft's own Autodiscover documentation [2] shows
all-lowercase URLs.

  [1] https://tools.ietf.org/html/rfc3986#section-6.2.2.1

  [2] https://docs.microsoft.com/exchange/architecture/client-access/autodiscover?view=exchserver-2019

Has anybody else here tested Microsoft products with automx2 ?

-Ralph