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Secure Mail Certificate on server is not bound to the SMTP Service error when running Hybrid Configuration wizard

  • Applies to: Exchange Online, Exchange Server 2013 Enterprise, Exchange Server 2013 Standard Edition, Exchange Server 2010 Enterprise, Exchange Server 2010 Standard

Original KB number:   3058190

Note

The Hybrid Configuration wizard that's included in the Exchange Management Console in Microsoft Exchange Server 2010 is no longer supported. Therefore, you should no longer use the old Hybrid Configuration wizard. Instead, use the Microsoft 365 Hybrid Configuration wizard that's available at https://aka.ms/HybridWizard. For more information, see Microsoft 365 Hybrid Configuration wizard for Exchange 2010.

Symptoms

When you run the Hybrid Configuration wizard, you receive the following error message:

[<Date><Time>] ERROR:Updating hybrid configuration failed with error 'Subtask CheckPrereqs execution failed: Configure Mail Flow

The Secure Mail Certificate on server <Server> is not bound to the SMTP Service at Microsoft.Exchange.Management.Hybrid.MailFlowTask.CheckCertPrereqs

Cause

The Simple Mail Transfer Protocol (SMTP) service is not bound to the correct certificate.

Resolution

Use the Enable-ExchangeCertificate cmdlet to bind the certificate to the SMTP service.

For more information about this cmdlet, see Enable-ExchangeCertificate.

More information

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