Oct 22 2009

Exchange 07 One Year after Install
(Event ID: 12018 or 12016)

If your Exchange 2007 Server is approaching or past its one year anniversary you may start seeing the following errors in the Application Event Log

Event Source: MSExchangeTransport
Event Category: TransportService
Event ID: 12018
Description:¬†The STARTTLS certificate will expire soon…

or

Event Source: MSExchangeTransport
Event Category: TransportService
Event ID: 12016
Description: There is no valid SMTP Transport Layer Security (TLS) certificate…

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