Internal transport certificate expired

by Shijaz Abdulla on 27.01.2009 at 16:47

January 27, 2009

The internal transport certificate is automatically generated at the Exchange Server 2007 hub transport server and is usually valid only for one year. Once the certificate expires, you will receive continuous event 12019 errors in your Edge transport servers that are subscribed via Edgesync.

Event Type:      Error
Event Source:    MSExchangeTransport
Event Category:  TransportService
Event ID:        12019
Date:            1/27/2009
Time:            4:46:34 PM
User:            N/A
Computer:        EDGETRANSPORT
The remote internal transport certificate expired. Certificate subject: CN=<hub transport server>.

You can generate a new SMTP transport certificate on the Hub transport server by running the New-ExchangeCertificate cmdlet with no arguments.


This will automatically generate a new certificate. You then need to restart the Microsoft Exchange Edgesync service so that the Edge transport servers will be informed of the change.

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One Response to Internal transport certificate expired

  1. Archie Nufable says:

    I am trying to renew our exchange certificate, but i cannot confirm because i am receiving this warning “This certificate will not be use for external TLS with an FQDN of, because the certificate takes precedence.

    Wondering if you can help me, Thank you

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