<html> <head> <style> .hmmessage P { margin:0px; padding:0px } body.hmmessage { FONT-SIZE: 10pt; FONT-FAMILY:Tahoma } </style> </head> <body class='hmmessage'> <BLOCKQUOTE><PRE>Hi All</PRE><PRE>For a few hours a day off and on, I get the following warning from "check_smtp -H xx.xx.xx.xx" <BR>command running on the main Nagios host:</PRE><PRE>"Invalid SMTP response received from host"<BR>"SMTP WARNING - 0.005 sec. response time|time=0.004907s;;;0.000000"</PRE><PRE>During this problem, if I run the same command on machine xx.xx.xx.xx, it returns:<BR><BR><BR><BR><BR><BR>SMTP OK - 0.005 sec. response time|time=0.005030s;;;0.000000</PRE><PRE>This affects only one machine out of many.</PRE><PRE>Any ideas appreciated.</PRE><PRE>TIA, Nick</PRE><PRE> </PRE></BLOCKQUOTE><br /><hr />Messenger on the move. <a href='http://mobile.uk.msn.com/pc/messenger.aspx ' target='_new'>Text MSN to 63463 now!</a></body> </html>