Do a manual telnet on port 25 from the nagios server to the mail server in connect and see if you can connect. <div class="gmail_quote">On Jan 18, 2008 5:38 AM, Julie S. Lin <<a href="mailto:jlin@myvest.com">jlin@myvest.com </a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi All Sorry for the incomplete info, I do know better, really. Pls forgive. Anyways, below is the result I get when I manually run check_smtp from my plugins directory. This is on a redhat es4 machine running 1.2 nagios (yes, very outdated I know). [root@xxx plugins]# ./check_smtp <a href="http://mail.xxx.com" target="_blank">mail.xxx.com</a> Socket timeout after 10 seconds [root@xxx plugins]# ./check_smtp <a href="http://mail.yyy.com" target="_blank">mail.yyy.com</a> SMTP OK - 0 second response time * so check_smtp fails on one mail server but not the other <a href="http://mail.xxx.com" target="_blank">mail.xxx.com</a> is behind the same firewall as the nagios server but on a different network.... <a href="http://mail.yyy.com" target="_blank">mail.yyy.com</a> is on another network outside of the firewall is there anything I should know about having nagios check_smtp server within a firewall?? And of course, mail is working just fine. > mail -v <a href="mailto:jlin@mail.xxx.com">jlin@mail.xxx.com</a> Subject: foo . EOT Null message body; hope that's ok jlin@mail.xxx.com... Connecting to <a href="http://mail.xxx.com" target="_blank">mail.xxx.com</a>. via esmtp... 220 <a href="http://xxx.com" target="_blank"> xxx.com</a> ESMTP >>> EHLO <a href="http://anywhere.com" target="_blank">anywhere.com</a> <a href="http://250-xxx.com" target="_blank">250-xxx.com</a> Ok. 250-AUTH PLAIN LOGIN CRAM-MD5 250-AUTH=PLAIN LOGIN CRAM-MD5 X-NETSCAPE-HAS-BUGS 250-STARTTLS 250-XVERP=Courier 250-XEXDATA 250-XSECURITY=NONE,STARTTLS 250-PIPELINING 250-8BITMIME 250-SIZE 250 DSN >>> STARTTLS 220 Ok >>> EHLO <a href="http://anywhere.com" target="_blank"> anywhere.com</a> <a href="http://250-xxx.com" target="_blank">250-xxx.com</a> Ok. 250-AUTH PLAIN LOGIN CRAM-MD5 250-AUTH=PLAIN LOGIN CRAM-MD5 X-NETSCAPE-HAS-BUGS 250-XVERP=Courier 250-XEXDATA 250-XSECURITY=NONE,STARTTLS 250-PIPELINING 250-8BITMIME 250-SIZE 250 DSN >>> MAIL From:<<a href="mailto:jsl@anywhere.com">jsl@anywhere.com</a>> SIZE=48 250 Ok. >>> RCPT To:<<a href="mailto:jlin@mail.xxx.com"> jlin@mail.xxx.com</a>> 250 Ok. >>> DATA 354 Ok. >>> . 250 Ok. 47903A17.00003806 jlin@mail.xxx.com... Sent (Ok. 47903A17.00003806) Closing connection to <a href="http://mail.xxx.com" target="_blank"> mail.xxx.com</a>. >>> QUIT 221 Bye. <div class="Ih2E3d"> -----Original Message----- From: <a href="mailto:nagios-users-bounces@lists.sourceforge.net">nagios-users-bounces@lists.sourceforge.net</a> </div><div class="Ih2E3d">[mailto:<a href="mailto:nagios-users-bounces@lists.sourceforge.net">nagios-users-bounces@lists.sourceforge.net</a>] On Behalf Of Marc Powell Sent: Thursday, January 17, 2008 7:33 PM To: <a href="mailto:nagios-users@lists.sourceforge.net"> nagios-users@lists.sourceforge.net</a> </div><div><div></div><div class="Wj3C7c">Subject: Re: [Nagios-users] check_smtp issues > -----Original Message----- > From: <a href="mailto:nagios-users-bounces@lists.sourceforge.net"> nagios-users-bounces@lists.sourceforge.net</a> [mailto:<a href="mailto:nagios-users-">nagios-users-</a> > <a href="mailto:bounces@lists.sourceforge.net">bounces@lists.sourceforge.net</a>] On Behalf Of Julie S. Lin > Sent: Thursday, January 17, 2008 6:36 PM > To: <a href="mailto:nagios-users@lists.sourceforge.net">nagios-users@lists.sourceforge.net</a> > Subject: [Nagios-users] check_smtp issues > > Hi > > I just added a new mail server and am having trouble getting check_smtp > to check it properly. This mail server is on a different network than > my nagios server > HOWEVER, I can telnet to the standard ports ( 25 and 993 just fine) > > check_smtp to another mail server on yet another network works. You should tell us what the problem is. Be very specific. We can't help if we don't know and we aren't going to guess. -- Marc ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. <a href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/" target="_blank"> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</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" target="_blank">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 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. <a href="http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/" target="_blank">http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/</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" target="_blank">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 </div></div></blockquote></div> -- Alex Dehaini Developer Site - <a href="http://www.alexdehaini.com">www.alexdehaini.com</a> Email - <a href="mailto:alexdehaini@gmail.com">alexdehaini@gmail.com</a>