Certificate-dependent connector configuration: Be certain that your on-premises email server is configured to utilize a certificate to mail email to Microsoft 365, plus the Typical-Name (CN) or Topic Alternate Name (SAN) within the certificate has a domain name you have registered in Microsoft 365, and you've got produced a certificate-based https://bookmark-dofollow.com/story18984014/new-step-by-step-map-for-ispconfig-support