SSL Cert expiry on Exchange 2007 - Event ID 12018

I found the following warning message on my Exchange 2007 server, the event ID is 12018.  I have applied an updated SSL cert but this old cert still showing on the log, what should I do to get rid of it.  I have checked the OWA, the SSL cert is updated.

The STARTTLS certificate will expire soon: subject:, hours remaining: KI098PMB83BD1AA9LE93F8B691E9GT47H8C1BEF7. Run the New-ExchangeCertificate cmdlet to create a new certificate.
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Shreedhar EtteCommented:

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just issue  New-ExchangeCertificate  from PowerShell it will solve this problem for you
KANEWONGAuthor Commented:

After using the Remove-ExchangeCertificate -thumbprint "XXXXX" command to remove the old cert, my warning message gone.
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