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Event id 12016 Exchange

Posted on 2014-10-27
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Last Modified: 2015-05-25
The error message is --there is no valid smtp transport layer security tls certificate for the fqdn of XXXXXXXXXXthe existing certificate fro that domain has expired.  

When I download the certificates once a year, I install it into the IIS .  I don't believe I have ever added the tls service in the exchange server itself. As it stands right now the current certificate is good until 11-11-14.  I tried going into the exchange shell and enabling the exchange certificate, but I'm not positive on what the command line should be for TLS specifically?
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Question by:Lamrski
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becraig earned 500 total points
ID: 40407537
ok so you need to generate a new smtp self signed cert:

 Get-ExchangeCertificate <current cert thumbprint>| New-ExchangeCertificate
Then Yes to All
and proceed to complete.

You can get the thumbprint by running
 Get-ExchangeCertificate | fl
Then identify the expired certificate in question.
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by:becraig
ID: 40407539
Here is a previously answered question that is just as helpful:

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_28382854.html
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by:Lamrski
ID: 40408855
Will this interfere with the certificate I already have  in place through a third party for my IIS?
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by:becraig
ID: 40408862
no the TLS certificate will not impact anything for IIS.

Also if you notice, the first step is to look for the actual expired certificate and then simply creating a new one.
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