Renew Exchange Certificate

Hello,

It appears that my owa exchange 2010 certificate has expired. I don't believe we had it purchased, but it is showing that it was issued by a certificate authority. Do I need to renew this through the certificate authority or can I just install our own certificate? What are the steps to install it?

Thank you.
exhuserAsked:
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Itzik HornsteinCommented:
You have to be renewed by the ROOT CA
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exhuserAuthor Commented:
How do I renew it in Exchange after purchasing from the authority?
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Itzik HornsteinCommented:
do you have root ca installed in your domain
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exhuserAuthor Commented:
I am not exactly sure, but probably yes since we had a certificate for 2 years.
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Robby SwartenbroekxMSP engineerCommented:
You can see in the current certificate who issued it. It can be an own internal CA. Then only domain joined machines will trust it, or it can be a bought certificate. Prices are really dropped in comparison to 2 years ago. If you buy one, it needs to be a SAN certificate (multi domain) or a wildcard certificate. (You need your default url (mail.domain.com) and autodiscover.domain.com)

In exchange 2010 there is a  very good wizard to request a certificate at your own CA.
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pizzaman7ConsultantCommented:
Even if you have a Certificate Authority on your domain I would not use it.  It won't be as trusted as one of the major Internet providers.  I have a 2013 Exchange Server and I use GoDaddy.  Two years ago it cost me $150.00 and I renewed recently for $89.00.  That's pretty cheap and then you won't run the risk of Gmail or other e-mail providers not trusting you.  I can have five wildcards with my GoDaddy cert.  I generate the request from my server and go to GoDaddy's site to import it and they will generate the official UCC cert that you can import back into your server.

This looks like a pretty good explanation of how to do it:

http://stevehardie.com/2013/10/how-to-renew-a-godaddy-exchange-2010-ssl-certificate/

If you have been managing to get by with your internal CA I'd be surprised that you don't have issues.  Gmail can be picky.  Good luck.
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suriyaehnopCommented:
To renew the Exchange certificate that use public CA

1. Create a CSR from Exchange server
2. Submit the CSR to public CA
3. Receive the certificate form public CA
4. Import the certificate to Exchange server
5. Enable services.

https://www.digicert.com/ssl-certificate-renewal-exchange-2010.htm
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