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If you have a SAN/UC certificate in place, then check it is enabled for SMTP using get-exchangecertificate. <br />
If it is, then simply remove the old self signed certificate completely. <br />
<br />
You will notice that multiple certificates can be enabled for SMTP when you view the output of get-exchangecertificate<br />
<br />
Simon. 
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If you have a SAN/UC certificate in place, then check it is enabled for SMTP using get-exchangecertificate.
If it is, then simply remove the old self signed certificate completely.

You will notice that multiple certificates can be enabled for SMTP when you view the output of get-exchangecertificate

Simon.

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Im getting the event warning message that STARTTLS cert self signed cert will expire soon. It directs to run the New-ExchangeCertificate cmdlt. I believe this is referring to the initial self signed cert created on installation and expiring in 1 yr.<br />
Questions: &nbsp;<br />
We have installed a SAN Cert which includes the listed server. &nbsp;Why is this one not being used? It is not expiring soon.<br />
Will I need to renew the self signed cert every year?<br />
If so Can I run the Clone process to reup the cert for another year?<br />
Get-ExchangeCertificate -Thumbprint c4242***33a4afc | New-ExchangeCertificate <br />

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Im getting the event warning message that STARTTLS cert self signed cert will expire soon. It directs to run the New-ExchangeCertificate cmdlt. I believe this is referring to the initial self signed cert created on installation and expiring in 1 yr.
Questions:  
We have installed a SAN Cert which includes the listed server.  Why is this one not being used? It is not expiring soon.
Will I need to renew the self signed cert every year?
If so Can I run the Clone process to reup the cert for another year?
Get-ExchangeCertificate -Thumbprint c4242***33a4afc | New-ExchangeCertificate 


Expiring Exchange Cert

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.

OS Security

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.