Failed to resolve mail server host name when sending test message from 3dm2
Problem:
The following message is displayed when attempting to send a test e-mail from the 3dm2 web interface:
(0x0C:0x000C): Failed to resolve mail server host name : Failed to send test message
Solution:
After filling in the e-mail notification fields, be sure to click on the "Save E-mail Settings" button before sending the test message.