I have a customer that has an exchange 2007 environment. The event logs has multiple event id 12014. Running the get certificate command resulted in 2 certificates.
The first certificate is a third party one with the certificate domain being the external domain i.e. mail.company.com. SMTP is one of the listed service of this certificate.
The second certificate is a self signed on with the certificate domain being the internal server name, i.e. server.domain.internal. SMTP is listed in the service of this certificate.
I also noticed that the self signed certificate has a status of invalid. The event id itself is complaining about the internal server.
Although I can ignore the error since it is not breaking anything in Exchange, I would like to know if the error can be resolved? Such as enabling the self signed certificate while still using the external certificate? Or looking into adding the internal server to the third party certificate?