[Dovecot] Not backing up cache files

[Gedalya]

On 03/26/2014 04:05 AM, Jesus Cea wrote:
> What I feel from reading documentation [1][2] is that they
> could be dropped in the backups, to be recreated on the fly if needed.
If you are using maildir, then yes, that's my understanding too, those 
files don't contain data that doesn't exist anywhere else. But beware 
that if you end up restoring many or all mailboxes at the same time, 
without indexes, then you will have lots of I/O activity for a while, as 
all of your users log in and the indexes are recreated. In some 
situations this might be overwhelming, depending on your workload/hardware.