[Dovecot] Email backend monitor script for Director

[Aliet Santiesteban Sifontes]

Hi people, I know I saw this at some point in the list but can't find it, I
need a script wich monitor the health of the email backend and if a node
fails remove it from the director server, once is up again add it, I plan tu
run the script at the load balancer, if you have some let me know..
thank's in advance