Using rsnapshot is working good for us.
I have one concern about backuping up e-mails. Since the mail clients we are using
save all of the users in one file, we noticed that every night rsnapshot will backup the increments, but the size is steadily increases.
We would to know if there is recommendation to e-mail clients and /or servers
That would allows us to save the users messages into separate files into separate folders. This will allow us to effeciently use rsnapshot (currently using version 1.3.0)