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:Â 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…