Is is possible to use ESA for Outbound mail only? I do not want to have Inbound mail coming into the ESA appliance, but instead leave Inbound mail as is coming into my Exchange Edge server. I only want to use Outbound mail leaving my Exchange Edge server to funnel through ESA C170 for DLP and Encyption purposes. By doing this method I want to make sure that I do not have to change my MX Records. Is this all possible? If so, what steps do I need to take? I can't seem to find any supporting articles or discussions on this matter. Much thanks!
Yes - this would be. You would need to assure that you have a Sender Group specified in your HAT, with the IP address listed in the Sender List - that way the mail will be treated as outbound, or relayed. As long as that would be in place - the mail should catch and filter through the Outbound Mail Policy - then, just assure you have DLP enabled & content filters, etc., for any mails you are expecting to trip and encrypt as needed.
Hope this helps!
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