If you have installed Microsoft Exchange 2007 Server and are receiving the below error when using Outlook 2007, there is a solution.
The message ‘Information you exchange with this site cannot be viewed or changed by others. However, there is a problem with the site’s security certificate.’ indicates that everything is working ok and securely, but it’s probably more of a pain for you users to receive this message every time they start Outlook 2007.
Please follow the process outline below to stop this error showing again:
1) Logon to your ‘Exchange 2007’ server.
2) Open the ‘Exchange Management Shell’.
3) Enter the below and press return, but change ‘ServerName’ to the name of your exchange 2007 server and change ‘mail.domain.co.uk’ to the FQDN of your exchange 2007 server:
Set-WebServicesVirtualDirectory -Identity “ServerName\EWS (Default Web Site)” -InternalUrl https://mail.domain.co.uk/ews/exchange.asmx
4) Enter the below and press return, but change ‘ServerName’ to the name of your exchange 2007 server and change ‘mail.domain.co.uk’ to the FQDN of your exchange 2007 server:
Set-OABVirtualDirectory -Identity “ServerName\oab (Default Web Site)” -InternalUrl https://mail.domain.co.uk/oab
5) Enter the below and press return, but change ‘ServerName’ to the name of your exchange 2007 server and change ‘mail.domain.co.uk’ to the FQDN of your exchange 2007 server:
Set-UMVirtualDirectory -Identity “ServerName\unifiedmessaging (Default Web Site)” -InternalUrl https://mail.domain.co.uk/unifiedmessaging/service.asmx
6) Enter the below and press return, but change ‘ServerName’ to the name of your exchange 2007 server and change ‘mail.domain.co.uk’ to the FQDN of your exchange 2007 server:
Set-ClientAccessServer -Identity ServerName -AutodiscoverServiceInternalUri https://mail.domain.co.uk/autodiscover/autodiscover.xml
7) Restart the ‘IIS’ service and everything should now operate perfectly