* Barry Warsaw <ba...@list.org>: > On Jun 02, 2012, at 07:19 AM, Patrick Ben Koetter wrote: > > >Maildir is robust but it doesn't scale under high load. You can add indexes, > >but they are limited sooner or later too. > > > >Concerning mailbox formats Timo Sirainens current approach to collect a > >limited number of messages in one file and then start a new one combines the > >best of both worlds - mbox and maildir - in mdbox > ><http://wiki2.dovecot.org/MailboxFormat/dbox>. > > > >Con > >It takes an index to know in which files a message is located. > > > >Pro > >A magnitude faster to backup, which I would keep an eye on because mailing > >list archives tend to be large and backing up a directory of small files is a > >well known performance killer. > > > >I can get you in contact with Timo if you like to. > > I've chatted with him a few times (I'm a Dovecot user and fan).
+1 > Would someone like to take a crack at implementing this format either in, or > on top of, the Python stdlib mailbox module: > > http://docs.python.org/library/mailbox.html > > I'd much rather use something standard (and maintained by someone else!) than > a bunch of custom code specific to Mailman. Speaking of standards. I discussed this with Timo in private mail and he suggests not to use mdbox directly. It is still under development and he thinks it should not become a standard format like mbox or maildir. To quote Timo from our conversation: I'd prefer using mdbox via Dovecot itself, either via LMTP or dovecot-lda or maybe by adding some "doveadm save" command. Anything else I think would be problematic. Even using Dovecot's library for accessing mdbox would be problematic in some installations if you didn't also read several settings from dovecot.conf (e.g. lock_method). Note: The "'doveadm save' command" above refers to an idea where dovecot would import to be archived messages from a MM3 mailing list into Dovecot (and whatever format has been definded for the mailbox). Maybe - and to pick up an idea Barry had mentioned to me a long time ago about mailing list management directly from a mail client - we would gain the most if we implemented an LMTP client as archiver (better: archive transport). This would introduce the chance to choose among many LMTP servers and their specific, optimized storage format (Dovecot -> mdbox, Cyrus IMAP -> ?) including their servers various IMAP SEARCH capabilities for searches in archives. p@rick -- state of mind () http://www.state-of-mind.de Franziskanerstraße 15 Telefon +49 89 3090 4664 81669 München Telefax +49 89 3090 4666 Amtsgericht München Partnerschaftsregister PR 563
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