POST https://autodiscover.example.org/autodiscover/autodiscover.xml
User-Agent: Microsoft Office/16.0 (Windows NT 10.0; Microsoft Outlook 16.0.14326; Pro)
Content-Type: text/xml
Accept: */*

<?xml version="1.0" encoding="utf-8"?>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/requestschema/2006">
  <Request>
    <EMailAddress>jochen@example.org</EMailAddress>
    <AcceptableResponseSchema>http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a</AcceptableResponseSchema>
  </Request>
</Autodiscover>