Servers -> Server -> Proto -> SMTP -> Right Click Virtual Server Properties
General -> Advanced -> Edit -> Check Sender Filter and Recipient Filter and Apply IMF and Connection Filter
Global Settings -> Message Delivery (Props) -> Recipient Filter (Check Box Filter recipients who are not in the Dir) -> IMF 8 Delete and 6 -> Sender Filtering (Filter with blank and Drop connection if address matches filter)
A Case Study: The Relationship Between a Managed Service Provider and Their Customer
Longtime AngelCom customer, Palace Law, provides the inside scoop on what the customer/MSP relationship looks like from a business perspective.