[Dovecot] Director mailserver health monitoring script

[Brad Davidson]

Timo,

> -----Original Message-----
> From: Timo Sirainen [mailto:tss at iki.fi]
> 
> Why HOST-SET 0 + HOST-FLUSH, rather than HOST-REMOVE?

The script gets the mailserver list from the director at the beginning of each poll cycle. If I remove a downed host, I'll never check it again to know when it recovers. Instead, I just disable it (vhost=0) and disassociate any active mappings, and then bump the vhost count back up when it's OK again.

-Brad