Nagios Support Forum

lmiltchev wrote:What exactly do you want to change?
Contacts cannot modify/customize the notification messages. Small changes are possible if you create a "custom" notification handler for each contact. I don't recommend this, because you can easily mess up your notifications if you don't know what you are doing.

Core Config Manager->Commands->Commands->type "notify" in the "Search" bar.
You will see the two commands that are used to notify contacts. Use the "Copy" action button to copy one of them, for example, "notify-host-by-email", rename the new command to let's say "notify-host-by-email-contact1", modify it, save, and apply configuration. For instance, you can add "-- -f [email protected]". This way, the proper e-mail will be shown in the "From" field.

Save and Apply Configuration.

Hope this helps.

lmiltchev wrote:You would normally append "-- -f [email protected]" to the end of the commands, but this is only for sendmail... If you are using mailx, I believe you need to use "-r". What is the output of the following command?

grep -2 by-email /usr/local/nagios/etc/commands.cfg

define command {
command_name notify-host-by-email
command_line /usr/bin/printf "%b" "***** Hyatt NOC Alert *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n\nNote: To acknowledge this issue please log in to Nagios XI at http://FOOBAR/nagiosxi/" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ Alert: $HOSTNOTIFICATIONNUMBER$**" $CONTACTEMAIL$
}
--

define command {
command_name notify-service-by-email
command_line /usr/bin/printf "%b" "***** Hyatt NOC Alert *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$\n\nNote: To acknowledge this issue please log in to Nagios XI at http://FOOBAR/nagiosxi/" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ Alert: $SERVICENOTIFICATIONNUMBER$**" $CONTACTEMAIL$
}