Mauro Sanna wrote:
I'm reading http://wiki.dovecot.org/Quota to enable quota management with dovecot. The first question is: I need to enable dovecot deliver, lda protocol, to have quota work?
It depends on the backend you use. If you use filesystem quota's, then there is no need to use the dovecot LDA, because the actual quota usage is already being updated by the filesystem/kernel itself.
However if you use Maildir++ quota, then something has to update the maildirsize file so that it contains the actual usage of that Maildir. So you need the dovecot LDA here, or another LDA that can update those files in a compatible way.
However I prefer to always use dovecot's deliver, because it automatically updates indexes and caches when a mail arrives, and this cannot be done by another LDA because the indexes and caches are dovecot specific.
Alexander