Certificate-dependent connector configuration: Be sure that your on-premises email server is configured to work with a certificate to mail email to Microsoft 365, plus the Widespread-Identify (CN) or Subject Alternate Title (SAN) while in the certificate is made up of a domain title you have registered in Microsoft 365, and https://bookmarkingdelta.com/story17133240/5-tips-about-apache-support-you-can-use-today