You can do this with a "backup_exit_notify" script on the master server.
Here's mine, only slightly modified from the default one that comes with NB.
It could be modified to mail different places based on day/time, etc. pretty
easily...

$ cat backup_exit_notify
#!/bin/sh
# $Header: backup_notify,v 1.0 2002/01/22 1l:44:00 integ Exp $

# Modified by Mark Donaldson 10/2002

#
# backup_notify
#
# NOTE:  this script will always be run in "background" mode, meaning that
#        the NetBackup scheduler will NOT wait for it's completion.
#
# This script:
#       receives 5 parameters:
#         CLIENT           - the client hostname
#         CLASS            - the class label
#         SCHEDULE         - the schedule label
#         SCHEDULE_TYPE    - the type of schedule:  FULL INCR UBAK UARC
#         STATUS           - the backup status for this job
#         STREAM           - the backup stream number for this job
#       must be executable by the root user
#       should exit with 0 upon successful completion

LOGFILE=/usr/openv/netbackup/logs/history.`date +%Y`.log
CONFFILE=/usr/openv/netbackup/bin/`basename $0`.conf

MAILADDR= you AT yourdomain DOT com

PATH=$PATH:/usr/openv/netbackup/bin:/usr/openv/volmgr/bin:/usr/local/bin
PATH=$PATH:/usr/openv/netbackup/bin/admincmd:/usr/openv/local
export PATH

echo "`date +%D_%T` $*" | sed 's/  *$//' | tr -s ' ' ',' >>$LOGFILE

       CLIENT=$1
        CLASS=$2
     SCHEDULE=$3
SCHEDULE_TYPE=$4
       STATUS=$5
       STREAM=$6

if [ -f $CONFFILE ]
then
  for addr in `awk '{ if ($1=="'$CLASS':'$SCHEDULE'" || $1=="'$CLASS':*")
{fld=2; while (fld<=NF) { print $fld++ }}}' $CONFFILE`
  do
    MAILADDR="$MAILADDR $addr"
  done
fi

shortclient=`echo $CLIENT| cut -f1-2 -d'.'`
shorthost=`hostname | cut -f1 -d.`
subjectline="NB $shorthost:$shortclient RC=$STATUS $CLASS:$SCHEDULE"

if [ $STATUS -gt 0 ]
then
  mailx -s "$subjectline" $MAILADDR <<-EOF
      Date=`date`
    Client=$CLIENT
     Class=$CLASS
  Schedule=$SCHEDULE
Sched type=$SCHEDULE_TYPE
    Status=$STATUS
    Stream=$STREAM

Error Description:
`bperror -S $STATUS -r`
EOF
fi

exit

-----Original Message-----
From: Macauley, David (Contractor) (DLIS) [mailto:David.Macauley AT dla DOT mil]
Sent: Wednesday, November 05, 2003 8:16 AM
To: Bu? (veritas-bu AT mailman.eng.auburn DOT edu)
Subject: [Veritas-bu] Job Monitoring


Is there a way to have Netbackup 3.4 send an e-mail whenever a backup fails?
We have just gone 24/7 on our help desk, and the powers that be want them to
be able to notify someone when an over-night (scheduled or not) backup
fails.


TIA,
Dave Macauley
Veritas Admin
NGIT/DLIS