Microsoft Technologies

Scenario 1 – MX record points to Office 365, and Office 365 filters all messages Scenario 2 - MX record points to Office 365, and mail is filtered on-premises Scenario 3 – MX record points to your on-premises servers  Scenario 4 – MX record points to your on-premises server, Your on-premises server relay messages to the internet through Office 365.

Office 365 is Microsoft Cloud Base SAS (Software As a Service) model. Office 365 . "Office 365" refers to subscription plans that include access to Office applications plus other productivity services that are enabled over the Internet (cloud services). Office 365 includes plans for use at home and for business. Learn about Office 365 for use at home . Office 365 plans for business include services such as