check process postfix with pidfile /var/spool/postfix/pid/master.pid
   group system
   group mail
   group postfix
   start program = "/etc/init.d/postfix start"
   stop  program = "/etc/init.d/postfix stop"
   if failed host localhost port 25 with protocol smtp for 2 times within 3 cycles then restart
   if 5 restarts with 5 cycles then timeout
   depend master_bin
   depend postfix_rc
   depend postdrop_bin
   depend postqueue_bin
   depend master_cf
   depend main_cf

 check file master_bin with path /usr/lib/postfix/sbin/master
   group postfix
   include /etc/monit/templates/rootbin

 check file postdrop_bin with path /usr/sbin/postdrop
   group postfix
   if failed checksum        then unmonitor
   if failed permission 2555 then unmonitor
   if failed uid root        then unmonitor
   if failed gid postdrop    then unmonitor

 check file postqueue_bin with path /usr/sbin/postqueue
   group postfix
   if failed checksum        then unmonitor
   if failed permission 2555 then unmonitor
   if failed uid root        then unmonitor
   if failed gid postdrop    then unmonitor

 check file master_cf with path /etc/postfix/master.cf
   group postfix
   include /etc/monit/templates/rootrc

 check file main_cf with path /etc/postfix/main.cf
   group postfix
   include /etc/monit/templates/rootrc

 check file postfix_rc with path /etc/init.d/postfix
   group postfix
   include /etc/monit/templates/rootbin