Certificate-based mostly connector configuration: Ensure that your on-premises email server is configured to employ a certificate to send out email to Microsoft 365, along with the Typical-Identify (CN) or Subject matter Alternate Name (SAN) within the certificate has a domain identify that you've got registered in Microsoft 365, and you've https://classifylist.com/story18728090/indicators-on-cpanel-server-support-you-should-know