A user sent an email to an outside (the LAN) email address. The outside person tried to respond but got a very strange message I have never seen:
The message below is what I received when I tried to email Tina.
From: Mail Delivery System
Sent: Saturday, November 04, 2006 10:59 PM
Subject: Delivery Status Notification (Failure)
The following message to <email@example.com.> was undeliverable.
The reason for the problem:
5.1.2 - Bad destination host 'DNS Malformed Query Error looking up calvaryspringfield.org. (MX).'
The return address is valid. Please advise. thanks.