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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. <br />
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Thanks in advance for your help.
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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.

How can I get a certificate for my .local domain.

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.

SSL / HTTPS

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.