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You have a hybrid deployment between a Microsoft Exchange Online tenant and an on-premises Exchange Server 2019 organization. The deployment contains an Exchange Server 2019 server named Server1. Server1 has a public certificate named Cert1 that is bound to the SMTP protocol. Cert1 will expire soon. you replace Cert1 with a new certificate named Cert2 from a different public certification authority (CA) After you replace the certificate, you discover that email delivery between Server1 and the Exchange Online tenant fails. You need to ensure that messages can be delivered successfully What should you do on Server1?
Correct Answer: A
Reference: When replacing a certificate used in a hybrid deployment, you should run the Hybrid Configuration wizard again to update the certificate information in the hybrid configuration settings. This process updates the certificate used by the hybrid deployment and ensures that email delivery between the on-premises Exchange Server and the Exchange Online tenant is successful.