I've frequently been getting an error when attempting to send out messages. I get an error email that is as follows:
From: System Administrator
Subject: Undeliverable: LearnOutLoud Followup
Your message did not reach some or all of the intended recipients.
Subject: RE: LearnOutLoud Followup
Sent: 11/29/2006 2:01 AM
The following recipient(s) could not be reached:
'email@example.com' on 11/29/2006 2:01 AM
550 Your HELO string is incorrect
I have know idea what the HELO string is. Any ideas on how to reconfigure this?