RA1203: Get ability to block email domain

Title	Get ability to block email domain
ID	RA1203
Description	Make sure you have the ability to block an email domain
Author	@atc_project
Creation Date	2020/05/07
Category	Email
Stage	RS0001: Preparation
References	https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/configure-your-spam-filter-policies?view=o365-worldwide
Requirements	MS_email_server

Make sure you have the ability to block an email domain on an Email Server using its native filtering functionality.