I wanted to add the feature to send nagios alerts via Jabber, aka XMPP protocol, instant messages.  Our office uses the Openfire platform for corporate instant messaging.  Some googling found this:

• Nagios Jabber Notification and Example Script

I modified the server connection and user variables to fit my Openfire installation.  However after running some simple command line tests, I could not get it to work.  The unable to connect errors were easy enough to understand and fix, but then I got an unauthorized error.

ERROR: Authorization failed: error - not-authorized

The link below has information on solution to the error.  OK, so now we assume you CAN send a test message via Jabber/XMPP.  Let's configure it.

There are two primary scenarios for configuring the Jabber/XMPP notifications. 

Scenario 1 - User wants to be contacted for ALL Nagios alerts via Jabber/XMPP. 

Define the contact command something like:

# 'notify-by-jabber' command definition
define command{
        command_name    notify-by-jabber
        command_line    /usr/local/nagios/bin/notify_via_jabber \
             $CONTACTADDRESS1$ "$NOTIFICATIONTYPE$ $HOSTNAME$ \
             $SERVICEDESC$ $SERVICESTATE$ $SERVICEOUTPUT$ $LONGDATETIME$"
        }

*note - I'm using the backslash for readability only, actually only one line.

Notice how I defined "$CONTACTADDRES1" in the command line.  Now check out  my Contact definition...

define contact{
        contact_name                    jdoe
        use                             generic-contact
        alias                           John Doe
        email                           jdoe@company.com
        address1                        jdoe
        service_notification_commands   +notify-by-jabber
        }

This will use the generic contact info for the email method -and- add the jabber contact method.  Note the "address1" line I am using for the appropriate jabber_id for the user.  Alternatively you could create a contact template called "jabber-contact" using the notify-by-jabber command and then apply both templates to the user contact definition.

Scenario 2 - User only needs specific Nagios service/host alerts via Jabber/XMPP.

Unfortunately this is simple.  You would need to define a second contact entirely to assign to the specific host/service.  Create a "jdoe-jabber" contact so on your Nagios host/service definition you would have a line like:

contacts          jdoe,jdoe-jabber

Maybe with an add-on or future version of Nagios we could define a user/contact method along the lines of:

contacts           jdoe:notify-by-jabber,jdoe:notify-by-email

Anyone listening?  Feel free to send me a note or comment.