Mail notification

Nagios
1

Hi All,

     I having configured the nagios every things seems to be working fine except the mail notification part I am not able to figure out why nagios not been able to send out email. My system is configured to use sendmail . ios and sendmail logs of the nagios and send mail are give bellow.

[root@nyx var]# tail -f nagios.log

[1111406029] Auto-save of retention data completed successfully.

[1111406319] SERVICE NOTIFICATION: shanthk;nyx;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

[1111406319] SERVICE NOTIFICATION: manjuv;nyx;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

[1111406319] SERVICE NOTIFICATION: guruprasadgv;nyx;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

[1111406489] SERVICE NOTIFICATION: shanthk;nyx;/dev/hdb1 Free Space;CRITICAL;notify-by-email;DISK CRITICAL - free space:

[1111406489] SERVICE NOTIFICATION: manjuv;nyx;/dev/hdb1 Free Space;CRITICAL;notify-by-email;DISK CRITICAL - free space:

[1111406489] SERVICE NOTIFICATION: guruprasadgv;nyx;/dev/hdb1 Free Space;CRITICAL;notify-by-email;DISK CRITICAL - free space:

[1111406919] SERVICE NOTIFICATION: shanthk;nyx;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

[1111406919] SERVICE NOTIFICATION: manjuv;nyx;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

[1111406919] SERVICE NOTIFICATION: guruprasadgv;nyx;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

[root@nyx var]# tail -f messages

Mar 21 17:21:29 nyx nagios: SERVICE NOTIFICATION: <contact_name>;<host_name>;/dev/hdb1 Free Space;CRITICAL;notify-by-email;DISK CRITICAL - free space:

Mar 21 17:23:49 nyx nagios: Auto-save of retention data completed successfully.

Mar 21 17:26:06 nyx sshd(pam_uni:evil:[9655]: authentication failure; logname= uid=0 euid=0 tty=NODEVssh ruser= rhost=192.168.0.78 user=root

Mar 21 17:26:31 nyx sshd(pam_uni:evil:[9655]: 1 more authentication failure; logname= uid=0 euid=0 tty=NODEVssh ruser= rhost=192.168.0.78 user=root

Mar 21 17:28:39 nyx nagios: SERVICE NOTIFICATION<contact_name>;;<host_name>;/;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

Mar 21 17:28:39 nyx nagios: SERVICE NOTIFICATION<contact_name>;;<host_name>;/;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

Mar 21 17:28:39 nyx nagios: SERVICE NOTIFICATION<contact_name>;;<host_name>;/;HTTP;WARNING;notify-by-email;HTTP WARNING: HTTP/1.1 403 Forbidden

Mar 21 17:31:29 nyx nagios: SERVICE NOTIFICATION<contact_name>;;<host_name>;/;/dev/hdb1 Free Space;CRITICAL;notify-by-email;DISK CRITICAL - free space:

Mar 21 17:31:29 nyx nagios: SERVICE NOTIFICATION<contact_name>;;<host_name>;/;/dev/hdb1 Free Space;CRITICAL;notify-by-email;DISK CRITICAL - free space:

Mar 21 17:31:29 nyx nagios: SERVICE NOTIFICATION<contact_name>;;<host_name>;/;/dev/hdb1 Free Space;CRITICAL;notify-by-email;DISK CRITICAL - free space:

[root@nyx log]# tail -f maillog

Mar 21 17:30:01 nyx sendmail[9734]: j2LC01Xn009734: from=[email protected], size=612, class=0, nrcpts=1, msgid=[email protected], proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]

Mar 21 17:30:01 nyx sendmail[9732]: j2LC01We009732: to=root, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30338, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (j2LC01Xn009734 Message accepted for delivery)

Mar 21 17:30:01 nyx sendmail[9735]: j2LC01Xn009734: to=[email protected], ctladdr=[email protected] (0/0), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30834, dsn=2.0.0, stat=Sent

Mar 21 17:35:00 nyx sendmail[9824]: j2LC50Vg009824: from=root, size=338, class=0, nrcpts=1, msgid=[email protected], relay=root@localhost

Mar 21 17:35:00 nyx sendmail[9826]: warning: /etc/hosts.allow, line 6: missing newline or line too long

Mar 21 17:35:00 nyx sendmail[9826]: j2LC50c6009826: from=[email protected], size=612, class=0, nrcpts=1, msgid=[email protected], proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]

Mar 21 17:35:00 nyx sendmail[9824]: j2LC50Vg009824: to=root, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30338, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (j2LC50c6009826 Message accepted for delivery)

Mar 21 17:35:01 nyx sendmail[9827]: j2LC50c6009826: to=[email protected], ctladdr=[email protected] (0/0), delay=00:00:01, xdelay=00:00:00, mailer=local, pri=30834, dsn=2.0.0, stat=Sent

Mar 21 17:35:15 nyx sendmail[9830]: warning: /etc/hosts.allow, line 6: missing newline or line too long

Mar 21 17:36:07 nyx sendmail[9830]: j2LC5FtR009830: localhost.localdomain [127.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA

2

it looks like sendmail isn’t configured correctly, it’s sending the mail to the itself and probably the messages are looping.
I’d say check how to configure a smartrelay in sendmail.

Luca

3

Plus, look at the syntax of the sendmail command in misccommand.cfg and try to send yourself a mail by command line.
type man mail for more help with mail syntax.