I have a test lab setup and I'm concerned about the incoming mail processing time. From the time I see an incoming message hit the Live Monitoring to the time it hits my Inbox is consistently 5 to 6 minutes. That isn't normal, is it? If I bypass the Email Protection, then incoming is almost instant. Outgoing email with or without Email Protection is almost instant, and I have scanning external email on as well. I tried changing the A/V scanning from dual to single, but that didn't help. I am using Exchange 2013 as the mail server.
Any ideas what I may have configured incorrectly or where I can start looking?
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