Certs renewal

this is a internal mail server only. users are getting asked to reinstall the cert. It is 5 years old and expires next month. How can I push out a new credentials for everyone. I don't know too much about Exchange. I set it up 5 years ago and it runs fine. I do manage the users on it.
tjgjrAsked:
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AmitIT ArchitectCommented:
First you need to order new Cert and then install it. follow this
https://technet.microsoft.com/en-in/library/ee332322(v=exchg.141).aspx

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