Use the Remote Connectivity Analyzer Tool to troubleshoot connectivity issues that affect the Exchange Server deployments. ...

Use the Remote Connectivity Analyzer Tool to troubleshoot connectivity issues that affect the Exchange Server deployments. The tool simulates several client logon and mail flow scenarios. When a test fails, many of the errors have troubleshooting tips to assist in correcting the problem. In particular, you'll want to test connectivity for Exchange Web Services (EWS) and Outlook Autodiscover.