Lock down your Filtered MX Logic Email
Friday, November 6th, 2009
Email filtering services provided by MX Logic works by having your email delivered to their filtering servers first (because your DNS MX records point there). Once filtered, their servers will deliver the messages to your email servers for ultimate delivery to your INBOX or other folders.
If a spammer knows what your “actual email servers” are (often because they didn’t change after adding MX Logic filtering), they can bypass your costly and very good filters by connecting directly to your email servers, thus taking the filtering servers “out of the loop”. What can you do?
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