problem with active sync

hi,

i am having this issue where i cant connect certain devices (nokia phones - even though iphones work ok) to exchange,

i have tried https://testexchangeconnectivity.com

and i am getting the following

ExRCA is testing Exchange ActiveSync.  
  The Exchange ActiveSync test failed.
   Test Steps
   Attempting to resolve the host name mail.domain.ie in DNS.
  The host name resolved successfully.
   Additional Details
  IP addresses returned: 213.146.154.164
 
 Testing TCP port 443 on host mail.domain.ie 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.domain.ie doesn't match any name found on the server certificate CN=192.168.168.168, OU=HTTPS Management Certificate for SonicWALL (self-signed), O=HTTPS Management Certificate for SonicWALL (self-signed), L=Sunnyvale, S=California, C=US.
 
does this look like a problem with the cert being issued? and my sonicwall doesnt even have that address?? thats the factory address