Sendmail

[frater]

A script to monitor sendmail.... (I'm still using it)

Make sure your /etc/zabbix/zabbix_agentd.conf contains at least the proper hostname

If you have questions, just ask in this thread.

create the items:

stat_data_format_error
maxfixed
stat_localconfigurationerror
reject4
reject5
domain
stat_sent
stat_service_unavailable
stat_user_unknown

/usr/local/sbin/zabbix-sendmail

#!/bin/sh
export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

NAME=`echo "$(basename $(readlink -f $0))" | tr ' +=-' '_' | tr '[A-Z]' '[a-z]' | tr -cd [a-z_]`
OFFSETFILE=/tmp/${NAME}.offset
MAILLOG=/var/log/maillog

if [ -z "`which logtail`" ] ; then
  echo "logtail is not installed, install with: apt-get install logtail" >&2
  exit 1
fi

sender=`which zabbix_sender` 2>/dev/null
[ -z "${sender}" ] && sender=/usr/bin/zabbix_sender
if [ ! -x "${sender}" ] ; then
  echo "zabbix_sender is not installed, install with: apt-get install zabbix-sender" >&2
  exit 1
fi

ZABBIX_CONF=/etc/zabbix/zabbix_agentd.conf
DEBUG=0

function zsend {

  key="$2"
  [ -z "$key" ] && key="`echo "$1" | sed 's/^ *//' | tr ' +=-' '_' | tr '[A-Z]' '[a-z]' | tr -cd [a-z_]`"
  value=`grep -c "$1" ${LOGSNIPPET}`

  if [ ${DEBUG} -eq 0 ] ; then
    ${sender} -c $ZABBIX_CONF -k "${key}" -o "${value}" 2>&1 >/dev/null
  else
    echo "Send key \"${key}\" with value \"${value}\"" >&2
    ${sender} -c $ZABBIX_CONF -vv -k "${key}" -o "${value}"
  fi
}

LOGSNIPPET=`mktemp`
LOG=/var/log/maillog

logtail -f ${LOG} -o ${OFFSETFILE} >${LOGSNIPPET}

zsend ' stat=Data format error'
zsend ' stat=Deferred'
zsend ' stat=Host unknown'
zsend ' stat=Local.configuration.error'
zsend ' stat=maillog Message exceeds maximum fixed size' "maxfixed"
zsend ' stat=Sent'
zsend ' stat=Service unavailable'
zsend ' stat=User unknown'
zsend ' Domain of sender address .* does not exist' 'domain'
zsend ' reject=4' 'reject4'
zsend ' reject=5' 'reject5'

rm -f ${LOGSNIPPET}

create a cronjob, preferably with a symbolic link
ln -s /usr/local/sbin/zabbix-sendmail /etc/cron.min/zabbix-sendmail

[frater]

Although it seems nobody is using it, I will post an updated version here.

I had the mailq working from the agent with a supporting script becuase I couldn't do it directly from the agent.

Anybody knows why I can't put this in my /etc/zabbix/zabbix_agentd.conf:

UserParameter=sendmailq,/usr/bin/mailq | tail -n1 | awk '{print $3}'

I stopped investigating it and decided to put the mailq in this script as well...
It needed a modify for this.
I still would like to know the answer to my previous question.

This is working flawless:

# cat /usr/local/sbin/zabbix-sendmail

#!/bin/sh
export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

NAME=`echo "$(basename $(readlink -f $0))" | tr ' +=-' '_' | tr '[A-Z]' '[a-z]' | tr -cd [a-z_]`
OFFSETFILE=/tmp/${NAME}.offset
MAILLOG=/var/log/maillog

if [ -z "`which logtail`" ] ; then
  echo "logtail is not installed, install with: apt-get install logtail" >&2
  exit 1
fi

sender=`which zabbix_sender` 2>/dev/null
[ -z "${sender}" ] && sender=/usr/bin/zabbix_sender
if [ ! -x "${sender}" ] ; then
  echo "zabbix_sender is not installed, install with: apt-get install zabbix-sender" >&2
  exit 1
fi

ZABBIX_CONF=/etc/zabbix/zabbix_agentd.conf
DEBUG=1

function zsend {

  key="$2"
  [ -z "$key" ] && key="`echo "$1" | sed 's/^ *//' | tr ' +=-' '_' | tr '[A-Z]' '[a-z]' | tr -cd [a-z_]`"
  value="$3"
  [ -z "${value}" ] && value=`grep -c "$1" ${LOGSNIPPET}`

  if [ ${DEBUG} -eq 0 ] ; then
    ${sender} -c $ZABBIX_CONF -k "${key}" -o "${value}" 2>&1 >/dev/null
  else
    echo "Send key \"${key}\" with value \"${value}\"" >&2
    ${sender} -c $ZABBIX_CONF -vv -k "${key}" -o "${value}"
  fi
}

LOGSNIPPET=`mktemp`
LOG=/var/log/maillog

# Take the last piece of the log that's not been read.
logtail -f ${LOG} -o ${OFFSETFILE} >${LOGSNIPPET}

# get the number of mails in the queue
sendmailq=`mailq 2>/dev/null | tail -n1 | awk '{print $3}'`
[ -z "${sendmailq}" ] && sendmailq=0

# Send the queue
zsend 'mailq' 'mailq' ${sendmailq}

# Analyse the log and send the data
zsend ' stat=Data format error'
zsend ' stat=Deferred'
zsend ' stat=Host unknown'
zsend ' stat=Local.configuration.error'
zsend ' stat=maillog Message exceeds maximum fixed size' "maxfixed"
zsend ' stat=Sent'
zsend ' stat=Service unavailable'
zsend ' stat=User unknown'
zsend ' Domain of sender address .* does not exist' 'domain'
zsend ' reject=4' 'reject4'
zsend ' reject=5' 'reject5'

rm -f ${LOGSNIPPET}

I also created a template....

[Dunmarie]

Thx. It works like beautifully.

[boe]

Anybody knows why I can't put this in my /etc/zabbix/zabbix_agentd.conf:

UserParameter=sendmailq,/usr/bin/mailq | tail -n1 | awk '{print $3}'

I stopped investigating it and decided to put the mailq in this script as well...
It needed a modify for this.
I still would like to know the answer to my previous question.

mailq must run from the root, zabbix-agent run mailq from user zabbix.

Try, UserParameter=sendmailq,sudo /usr/bin/mailq | tail -n1 | awk '{print $3}'