Unexpected service response

list Michael Nemeth
Tue, 15 Jul 2008 06:12:55 -0400
Message-Id: <user-d3aad21a3aac@xymon.invalid>

yellow dot shows : Service pop3 on pop.ourmail.com is not OK : Unexpected service response
How do I see what it was so I fix it?
I do get a red dot when pop3 is down.