SBS 2011 expired certificates

Dear experts,

I do not experience any problems with my SBS 2011 server. "Fix my network" wizard doesn't any error.

When I open IIS certificates or exchange certificates, I see few expired certs. You can see it on attached screenshots.
Is it safe to remove them?

There are all "CN=sites" certs expired.
Then there are another 3 certs with long subject, something like ",,, ..."

Jaroslav LatalMSPAsked:
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Michael ChisholmCommented:
You can remove them as you should have gotten a connection error if you were using the services.  I would be caution and verify this or, this would be what I would do,  create new certs to take their place before removing them to ensure proper security and functionality. Then remove the expired certs.
before removing the certs please verify if they are not used by any exchange services. check the certs installed on Exchange server.
Michael ChisholmCommented:
To update my previous comment, the certificates are attached to SMTP in your images.  You also have a non expired cert attached to SMTP which is what the server should be publishing. You should be able to delete without an issue.
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Jaroslav LatalMSPAuthor Commented:
Correct me if I'm wrong.

I have to check SMTP service whether it uses some of the expired certs, right?
And how can I check it? I didn't find it in Exchange Management Console..

Should I remove certs from Exchange management Console or IIS or MMC (certificates) console?

Michael ChisholmCommented:
You do not need to check. By the image posted the SMTP service is attached to the new certificate as well as the expired certs.  The one thing you may want to check is that the cert is working properly by navigating to OWA and making sure it displays properly without any red "X"s in the SSL area of the URL. If the page display properly you should be all set to remove the expired certs.  

Removing the certs should be done on the exchange MC first and then removed from the server in the certmgr.msc.

Let me know if you would like assistance. Teamviewer or similar.

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Jaroslav LatalMSPAuthor Commented:
Hi Michael, I just removed expired "sites" cert from EMC. It disapeared automatically from IIS and MMC (local computers personal certs).

Thanks for help.

Michael ChisholmCommented:
Glad to hear everything worked out for you. I love working with exchange and hope that in the future I can be of assistance if needed.
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