I have recently migrated my exchange 2003 server to exchange 2010. It is still running on a .local domain with external email going to a .org domain. I purchased an SSL certificate for the .org domain and external email works with no issues. I am still getting certificate mismatch errors for internal outlook clients. I understand I am not able to purchase an SSL certificate for a .local domain. Is there a way to disable SSL for internal email or turn this feature off. I really don't need it for internal email to Outlook clients. I would prefer not to have to rename the domain since that may create other issues.
Thanks in advance for your help.