tpc port state service answer mailqueueS (amount of mails per mail queue, size of mailqueueS) => depends on your smtp software disk space number of smtp processes number of AV/anti-spam and related processes number of open ports on the host log file DNS service behabiors (resolv working or cache OK) of course there are also all other system related services which may be running on the servers: snmpd, sshd, traffic on interface,... <div>On 2/17/07, Jay Chandler <<a href="mailto:chandler.lists@chapman.edu">chandler.lists@chapman.edu</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I'm primarily responsible for mailservers at my site. So far I have monitors running on the host's responding to pings, to load average, and to the mail queue. Anything else anyone can suggest that I monitor? I've only got three or four mailservers, so I don't mind going a smidgen overboard on their monitoring... -- Jay Chandler Network Administrator, Chapman University 714.628.7249 / <a href="mailto:chandler@chapman.edu">chandler@chapman.edu</a> Today's Excuse: A star wars satellite accidently blew up the WAN. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash <a href="http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV">http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV </a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users"> https://lists.sourceforge.net/lists/listinfo/nagios-users</a> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null </blockquote></div>