getting "Host name mail.mydomain.com does not match any name found on the server certificate CN=LTCEX1"

have exchange 2010 set up and working for mail in the domain. users cannot connect IPHONES or blackberrys. when I try to do a test on Microsoft Exchange Remote Connectivity Analyzer I get the following...
(checked "Manually Specify Server Settings"
Server is mail.mydomain.com
domain\user = mydomain.com\username
pass and confirm
did not check sync all items or ignore trust for SSL

I get the following result

Testing Exchange ActiveSync  
  Exchange ActiveSync test Failed
   Test Steps
   Attempting to resolve the host name mail.mydomain.com in DNS.
  Host successfully resolved
   Additional Details
  IP(s) returned: xxx.xxx.xxx.xxx  
 
 Testing TCP Port 443 on host mail.mydomain.com to ensure it is listening and open.
  The port was opened successfully.
 Testing SSL Certificate for validity.
  The SSL Certificate failed one or more certificate validation checks.
   Test Steps
   Validating certificate name
  Certificate name validation failed
   Tell me more about this issue and how to resolve it
   Additional Details
  Host name mail.mydomain.com does not match any name found on the server certificate CN=LTCEX1  
 
 
 
 
 
dhales1Asked:
Who is Participating?
 
petermierCommented:
Also, don't forget you will need to generate the CSR for the certificate from the Exchange Management Shell. Many of the SSL providers will provide a wizard on their page to assist in the process.

For example:
https://www.digicert.com/easy-csr/exchange2010.htm
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dhales1Author Commented:
On IPHONE users are getting...

"Unable to Verify Certificate The Certificate from "mail.mydomain.com" for account myusername@mydomain.com could not be verified."
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petermierCommented:
At first glance, it looks like you are using a self-signed or internal certificate. Have you already purchased a certificate from a public Certification Authority?


certificate.png
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Alan HardistyCo-OwnerCommented:
Your certificate needs to include the following names to get everything working properly and the best option is to purchase a Multi-Name certificate (SAN / UCC) from a 3rd Party SSL provider such as GoDaddy.
mail.yourdomain.com
autodiscover.yourdomain.com
internalservername.internaldomain.local
internalservername
You cannot use the certificate installed by default with Exchange 2010 - it simply will not work and your current certificate is not issued to a Fully Qualified Domain Name - which it needs to be.
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