"Secure Mail Certificate on server is not bound to the SMTP Service" error when you run the Hybrid Configuration wizard Content provided by Microsoft Applies to: Exchange OnlineExchange Server 2013 EnterpriseExchange Server 2013 Standard EditionExchange Server 2010 EnterpriseExchange Server 2010 Standard More Select Product Version All Products 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 Office 365 Hybrid Configuration wizard that's available at http://aka.ms/HybridWizard. For more information, see Office 365 Hybrid Configuration wizard for Exchange 2010. PROBLEM 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 FlowThe 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. SOLUTION Use the Enable-ExchangeCertificate cmdlet to bind the certificate to the SMTP service. For more information about this cmdlet, see Enable-ExchangeCertificate. MORE INFORMATION Still need help? Go to Microsoft Community or the Exchange TechNet Forums. Last Updated: Dec 21, 2016 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.