Hi All,

We have a problem related Exchange Server 2010 Activesync.My problem is;When I connecting to activesync from outside, I am receiving the following error.

ExRCA is testing Exchange ActiveSync.
The Exchange ActiveSync test failed.

Test Steps

Attempting to resolve the host name mail.xxxxx.com in DNS.
The host name resolved successfully.

Additional Details
IP addresses returned: xx.0.x3.4
Testing TCP port 443 on host mail.x.com to 
ensure it's listening and open.
The port was opened successfully.
Testing the SSL certificate to make sure it's valid.
The SSL certificate failed one or more certificate validation checks.

Test Steps

Validating the certificate name.
Certificate name validation failed.
Tell me more about this issue and how to resolve it

Additional Details
Host name mail.x.com doesn't match any name found 
on the server certificate CN=xxxxxx.

Thanks in advance all your help.