Exchange
Get Exchange server version
Touch the following file:
https://{HOST}:{PORT}/ecp/Current/exporttool/microsoft.exchange.ediscovery.exporttool.application
The result file contains the version of the server:
<assemblyIdentity name="microsoft.exchange.ediscovery.exporttool" version="15.1.2242.5" publicKeyToken="deffc2c208a0af39" language="neutral" processorArchitecture="msil" type="win32" />
The HTTP headers give the internal FQDN of the backend Exchange server:
HTTP/1.1 200 OK
...
X-CalculatedBETarget: internal-exchange.contoso.com
X-FEServer: INTERNAL-EXCHANGE
...