<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2653.12"> <TITLE>check_smtp problems</TITLE> </HEAD> <BODY> I am new to Nagios, and recently got my configuration working. Upon the initial set up I intentionally configured one of my hosts to NOT pass the one of it's service checks. For some reason Nagios is reporting that the results of the "check_smtp" plugin are "OK", even though "Connection refused by host" is what is returned to the command line. When I originally set this up, I received a "Critical" error (which is what I want), when the check returned "Connection refused by host". I'm not sure why it is now reporting that the status is "OK". I have not changed the parameters being passed to "check_smtp", nor have I changed the version of the plugin. Can anyone tell me what I might be doing wrong? check_smtp Version info: check_smtp (nagios-plugins 1.3.0-beta2) 1.8 </BODY> </HTML>