Old Exchange 2013 Server certificate notification

I have recently installed a new Exchange Server 2013 and moved all mailboxes over to it. The old server has been takenout of service and removed from the domain. Before it was turned off was its certificate expired. On the new server appears at each log in a notification about the old certificate on the old server. How do I remove that notification?

September 11th, 2015 12:19pm

Did you uninstall Exchange from the server before taking it out of service? If not, then you have given yourself a pile of work to do because you should always remove Exchange before taking the machine out of service.

Basically Exchange thinks it is still there, so you will have to recover it to remove it correctly.

Simon.

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September 11th, 2015 2:13pm

Yes I uninstalled Exchange before removing the server.
September 11th, 2015 2:31pm

Hi,

Please run below command to check the Exchange certificate:
Get-ExchangeCertificate | FL Identity,*not*,Services,Subject,*Domain*

If remain contain the FQDN of old server or it's expired, we will need re-create this certificate. For your reference:
https://technet.microsoft.com/en-us/library/ee332322(v=exchg.141).aspx

Note: After you generate a certificate request, you must submit it to a certification authority, obtain a signed certificate and install the certificate on the same server.

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September 13th, 2015 11:12pm

Aften running the powershell there is no mentioning of the old server.

When I began to use the new server I made a new certificate to it. I never renewed the certificate to the old server.

September 14th, 2015 6:18am

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