Also you may run into client limits.... i ve seen this with outlook, apple mail, thunderbird via imap in the past
Thanks for this note Robert, it was not really an aspect that I was considering.
We are operating our groupware services user access through both Evolution Groupware and KDE Kontact / KMail on Debian Linux workstations. Hopefully if there is a client issue it should be local to only one groupware client.
I will be sure to study / investigate in this - client - area should any issues that are not traceable to the server-side arise.
Many thanks,
Arnold Opio Oree Chief Executive Officer Parallax Digital Technologies
arnoldoree@parallaxdt.com
tel : +44 (0) 333 577 8587 fax : +44 (0) 20 8711 2477
Parallax Digital Technologies is a trading name of Parallax Global Limited. U.K. Co. No. 08836288
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-----Original Message----- From: Robert Schetterer via dovecot dovecot@dovecot.org Reply-To: Robert Schetterer rs@sys4.de To: dovecot@dovecot.org Subject: Re: Applying Dovecot for a large / deep folder-hierarchy archive. Date: Thu, 27 Jun 2019 12:53:49 +0200
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