Users are reporting being unable to connect to the Exchange server whilst away from the office via MS Outlook.
Inside the office, through OWA, and via iPhone its OK
Doing a test on www.testexchangeconnectivity.com
returns the following error,
Testing HTTP Authentication Methods for URL https://remote.myclient.com/rpc/rpcproxy.dll?KL-HQ-SVR-01:6002.
The HTTP authentication test failed.
A Web exception occurred because an HTTP 503 - ServiceUnavailable response was received from Unknown.
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Date: Tue, 01 Oct 2013 08:42:32 GMT