Multi-domain support with and without IP multihoming, multi-mailbox accounts and shared mailboxes, Internet mail exchange service using the ESMTP protocol, anti-spam mechanisms, and much more.The Features table can be used to compare the CommuniGate Pro with other systems available on the market today.The CommuniGate Pro Server is based on the Internet Standards (RFCs) and it offers a variety of features needed for today's industrial-level messaging systems.Here are some key features of "CommuniGate Pro":