Simple check postfix queue

# Auteur : Belgotux
# Site : www.monlinux.net
# Licence : CC-BY-NC-SA
# Version : 1.0
# Date : 21/08/18
# changelog
# v1.0 check different postfix queue

Check these items :
- queue request
- queue size in KB
- queue active with personalized warning and critical
- queue deferred with personalized warning and critical
- queue bounce/corrupt/maildrop with generic warning and critical

Generate perfdata for graphic view :
- queue req, size
- queue active/deferred/bounce/corrupt/maildrop

Use : check_postfix_queue.sh [-dir postfix_dir] [-wa warning_active] [-ca critical_active] [-wd warning_deferred] [-cd critical_deferred] [-wo warning_other] [-co critical_other]

Example nrpe config file : command[check_mailqueue]=/usr/lib/nagios/plugins/check_postfix_queue.sh --wa 100 --ca 500 --wd 500 --cd 1000 --wo 1 --co 100