Hi all,<br>I have nagios 3.0.5 installed and it seems that it is working ok but no notifications are sent. Instead, in /home/nagios/dead.letter the messages keep arriving. The problem seems to be due to mail headers :<br><br>
"From nagios Fri Jan  9 09:38:31 2009<br>Return-Path: <nagios><br>Received: (from nagios@localhost)<br>        by localhost.localdomain (8.14.1/8.14.1/Submit) id n097cVWc011912<br>        for $; Fri, 9 Jan 2009 09:38:31 +0200<br>
Date: Fri, 9 Jan 2009 09:38:31 +0200<br>From: nagios<br>Message-Id: <200901090738.n097cVWc011912@localhost.localdomain><br>To: $<br>Subject: **  Service Alert: ITM_M._Ciuc/is_alive is OK **"<br><br>Somehow it seems that no user address is found (or the address $ is used ). Also, the mail log says the same thing:<br>
<br>Jan  9 12:33:14 localhost sendmail[11185]: n09AXEi5011185: from=nagios, size=276, class=0, nrcpts=1, msgid=<200901091033.n09AXEi5011185@localhost.localdomain>, relay=nagios@localhost<br>Jan  9 12:33:14 localhost sendmail[11186]: n09AXE29011186: <$@localhost.localdomain>... User unknown<br>
Jan  9 12:33:14 localhost sendmail[11185]: n09AXEi5011185: to=$, ctladdr=nagios (514/514), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30276, relay=[127.0.0.1] [127.0.0.1], dsn=5.1.1, stat=User unknown<br>Jan  9 12:33:14 localhost sendmail[11186]: n09AXE29011186: from=<nagios@localhost.localdomain>, size=276, class=0, nrcpts=0, proto=ESMTP, daemon=Daemon0, relay=localhost.localdomain [127.0.0.1]<br>
<br>Do you encounter such behaviour?<br><br>Some relevant config files are as below:<br><br><br>define host {<br>        host_name                       host1<br>        alias                           host1<br>        address                         172.30.129.67<br>
        use                             generic_business_hour<br>}<br><br>#generic_business_hour<br>define host {<br>        name                            generic_business_hour<br>        process_perf_data               1<br>
        retain_status_information       1<br>        flap_detection_enabled          1<br>        retain_nonstatus_information    1<br>        active_checks_enabled           1<br>        passive_checks_enabled          1<br>
        check_period                    9la18<br>        obsess_over_host                0<br>        check_freshness                 1<br>        freshness_threshold             0<br>        check_command                   i
 s_icmp_alive<br>
        max_check_attempts              3<br>        event_handler_enabled           1<br>        event_handler                   notify-host-by-email<br>        notifications_enabled           1<br>        notification_interval           15<br>
        notification_period             9to18<br>        notification_options            d,u,r,f<br>        stalking_options                d,o,u<br>        contact_groups                  admins<br>        register                      &nb
 sp; 0<br>
        action_url            /nagios/pnp/index.php?host=$HOSTNAME$<br>}<br><br># contactgroups admins<br>define contactgroup {<br>        contactgroup_name               admins<br>        alias                           admins<br>
        members                         nagios,user<br>}<br><br><br>define contact {<br>        contact_name                    nagios<br>        use                             generic-contact<br>        alias               &nbsp
 ;           nagios<br>
        email                           nagios@localhost<br>}<br><br>define contact {<br>        name                            generic<br>        host_notification_period        24din2_7din7<br>        service_notification_period     24din2_7din7<br>
        host_notification_options       d,u,r,n,f<br>        service_notification_options    u,c,w,r,n,f<br>        host_notification_commands      notify-host-by-email<br>        service_notification_commands   notify-service-by-email<br>
        register                        0<br>}<br><br>define command {<br>        command_name                    notify-host-by-email<br>        command_line                    /usr/bin/printf "%b" "***** Nagios *****\n\nNotification: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" |
  /bin/mail -s "** $NOTIFFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$<br>
}<br><br>Thank you,<br>Alex<br>