<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <TITLE>Re: [Nagios-users] Sendmail Email Unable to send... do not know where to change this</TITLE> </HEAD> <BODY>  You need to define your hostname in sendmail.cf on the monitoring machine. I believe it is the Dj macro but please rtfm to be sure. -- Marc Sent from a very tiny wireless device with a very tiny unlit keyboard. -----Original Message----- From: Vance Duke <vance.duke@imaginuity.com> To: Nagios-users@lists.sourceforge.net <Nagios-users@lists.sourceforge.net> Sent: Fri Dec 06 07:55:09 2002 Subject: [Nagios-users] Sendmail Email Unable to send... do not know where to change this Here is the bounce back that I am getting. I assume it is because the Domain for the email address is Monitor (which is the machine name). In the NAGIOS.CFG I have set the Administrator Email address to "vance.duke@imaginuity.com". This error I am getting when trying to send mail from within Sendmail, and this is the bounce back. > The original message was received at Thu, 5 Dec 2002 15:56:13 -0600 from root@localhost > > ----- The following addresses had permanent fatal errors ----- > vance.duke@imaginuity.com (reason: 501 <nagios@Monitor>... Sender domain must exist) > > ----- Transcript of session follows ----- > ... while talking to raq3.imaginuity.com.: > >>> MAIL From:<nagios@Monitor> SIZE=354 > <<< 501 <nagios@Monitor>... Sender domain must exist > 501 5.6.0 Data format error This is the log information from the Sendmail log. > Dec 5 15:56:13 Monitor sendmail[4267]: gB5LuDI04267: from=nagios@Monitor, size=354, class=0, nrcpts=1, msgid=<200212052156.gB5LuDI04267@Monitor>, relay=root@localhost > Dec 5 15:56:13 Monitor sendmail[4270]: gB5LuDI04267: to=vance.duke@imaginuity.com, ctladdr=nagios@Monitor (500/500), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=30354, relay=raq3.imaginuity.com. [216.234.235.10], dsn=5.6.0, stat=Data format error > Dec 5 15:56:13 Monitor sendmail[4270]: gB5LuDI04267: gB5LuDH04270: DSN: Data format error I do not know if this a Nagios issue or a Sendmail issue, and any help would be appreciated. Thanks, Vance Duke ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. <A HREF="http://thinkgeek.com/sf">http://thinkgeek.com/sf</A> _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net <A HREF="https://lists.sourceforge.net/lists/listinfo/nagios-users">https://lists.sourceforge.net/lists/listinfo/nagios-users</A> </BODY> </HTML>