Looking for some recommendations on Email Gateways. Hoping to catch the attention and get ideas from Exchange Admins, Cyber Security Professionals, folks who work the security field, email is a big open doorway for attacks that I want to shut.
It must be able to do the following:
Spool email (save emails in a cache state while servers are down unexpectedly),
Email Continuity (allow users to view email during extended mail server downtime)
Incredible spam, virus, etc. filtering.
Users - 300 - 500
Exchange 2013 environment , on-site premise
The following gateways have been considered already, looking for additional choices.
Edgewave and Proofpoint