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Enough information to confirm as answer.
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Hello, we are setting up a certificate for our mail server through goDaddy. We have gone through a name re-branding and I am setting up he new name. &nbsp;I was wondering If activesync.mycompany.com is necessary. I was also wondering if I should match the old SAN;s with the new or if something was redundant or un-necessary and could be removed. Thanks<br />
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Current Certificate.........<br />
mail.mycompany.com<br />
<a href="http://www.mail.mycompany.com" rel="ugc">www.mail.mycompany.com</a><br />
autodiscover.mycompany.com<wbr /><br />
activesync.mycompany.com<br />
<br />
New Certificate............<br />
mail.mycompany.com<br />
<a href="http://www.mail.mycompany.com" rel="ugc">www.mail.mycompany.com</a><br />
autodiscover.mycompany.com<wbr /><br />
mycompany.com
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Hello, we are setting up a certificate for our mail server through goDaddy. We have gone through a name re-branding and I am setting up he new name.  I was wondering If activesync.mycompany.com is necessary. I was also wondering if I should match the old SAN;s with the new or if something was redundant or un-necessary and could be removed. Thanks

Current Certificate.........
mail.mycompany.com
www.mail.mycompany.com
autodiscover.mycompany.com
activesync.mycompany.com

New Certificate............
mail.mycompany.com
www.mail.mycompany.com
autodiscover.mycompany.com
mycompany.com

Correct SAN's for SSL mail certificate

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

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.

Email Servers

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.