To help administrators with the remote connectivity to Exchange, Microsoft has created a website which will definitly help with troubleshooting remote connectivity issues. The great thing is that the website acts like a client (Outlook or Mobile) trying to connect to Exchange through SRV records (_autodiscover._tcp.domain.com) and autodiscover (among other things).

These tests include :

• Microsoft Exchange ActiveSync Connectivity Tests
  Exchange ActiveSync with AutoDiscover
  Exchange ActiveSync
• Microsoft Exchange Web Services Connectivity Tests
  ActiveSync Provider AutoDiscover
  Outlook Provider AutoDiscover
• Microsoft Office Outlook Connectivity Tests
  Outlook Anywhere with AutoDiscover
  Outlook 2003 RPC/HTTP 
• Internet Email Tests
  Inbound SMTP Email Test

View the website : Test Exchange Connectivity

The Microsoft Exchange Team has published some good articles about Exchange 2010 and high availability. The main subject is the database availability groups which are available in Exchange 2010.

In Exchange 2007 CCR and SCR where introduced. You needed a Windows Cluster Continue reading »

I had a weird issue which occured at the communicator client (R2). The OCS (Office Communication Server) is version 2007 R2.

When I logged in (internal), the client had an exclamation mark. The following 2 errors occured :

Cannot synchronize with the corporate address book. This may be because the proxy server setting in your web browser does not allow access to the address book. If the problem persists, contact your system administrator.

Communicator could not retrieve calendar or Out of Office information from Exchange Web Services. Communicator will automatically  continue to retry. If this problem persists, contact your  system administrator.

When I started troubleshooting the issue I also noticed that Continue reading »