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Exchange 2007 - Self.Signed Certificates

Posted on 2014-03-31
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I am trying to renew some certificates that expired.  They are self-signed certificates and I get this error message:

WARNING:  This certificate will not be used for external TLS Connections with an FQDN of 'NYABC.cortoso.com' because the CA-signed certificate with the thumbprint '67DE  xxx' takes precedence'.

Can someone explain what this means to me.  Should I proceed or just remove the certificate.EXCH
thanks
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Question by:techgenious
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by:Adam Brown
ID: 39967984
You might already have a valid non-self signed certificate set up to run TLS on that server. Run get-exchangecertificate and find the one that has the thumbprint referenced there. Self-Signed certificates aren't generally recommended for use on Exchange servers, since they are only valid to computers that install the certificate as a trusted third party root cert. If you have a valid certificate installed and configured that was issued by a Third Party Root CA, exchange will utilize that instead of self-signed as long as it matches the FQDN set up on your send and receive connectors.
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techgenious earned 0 total points
ID: 39989621
If you have a valid certificate installed and configured that was issued by a Third Party Root CA, exchange will utilize that instead of self-signed as long as it matches the FQDN set up on your send and receive connectors.  

Can I remove the old one then if the above is true?

Thanks
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Author Closing Comment

by:techgenious
ID: 40014350
excellent
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