Am 27.06.2019 um 07:35 schrieb Aki Tuomi via dovecot:
On 26.6.2019 22.12, Arnold Opio Oree via dovecot wrote:
Hello to you all,
I'd like to ask about my intended application of Dovecot to create a
folder-hierarchy for storing our enterprise emails, which are treated as live
data rather than archives for compliance or occasional / reactive retrieval.
The data is presently not that large (a few gigabytes), but it is expected to
grow rapidly. Up to this stage the data has been contained
in a Microsoft Exchange mailbox (2013), and then in an offline PST. The move to
the offline PST was by necessity, as the large number of
folders, and depth of hierarchy to my best understanding caused the exchange
server / outlook / evolution mail clients to begin to
malfunction. To cope with this the archive was broken up and the bulk stored in
the offline PST and the most active components stored in
online Exchange mailboxes.
I have some understanding of the fs mbox format, and also the mitigations to be
made for certain characters / strings. My main concern is whether Dovecot is
likely to be able to cope well with a large number of folders / depth of
hierarcy.
I will really appreciate any help / advice you can give.
Best regards,
Arnold Opio Oree
Hi!
Dovecot 2.2.34/2.3 supports unlimited folder depth, the only limiting
factor is that the total name may not exceed 4096 bytes. Also individual
folder names may not exceed 255 bytes.
Prior to that the limit is 255 per folder up to 16 levels.
I can't recommend using 'mbox' storage format, please consider using
maildir or sdbox instead.
Aki
Also you may run into client limits.... i ve seen this with outlook,
apple mail, thunderbird via imap in the past
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