[ucc] IMAP server question

Paul Marinceu elixxir at ucc.asn.au
Wed Aug 9 11:34:21 WST 2006


On Wed, Aug 09, 2006 at 11:35:47AM +1000, David Luyer wrote:
> >>> Dovecot can have scalability problems when users insist of keeping
> >>> gigabytes in their mailboxes. Which poses a problem because Dovecot
> >>> keeps it all in the one file; being "afraid" to use inodes.
> > 
> >> As much as Maildir is an abuse of the filesystem, dovecot supports
> >> maildir just fine if you tell it to use it.
> > 
> > My bad. I've only ever seen it with blobs.
> > 
> > Reiserfs doesn't see Maildir as an abuse, btw. Reiserfs sings
> 
> Correctly configured Dovecot using Maildir++ on properly tuned
> reiserfs is the highest performing and most reliable IMAP4 server
> I'm aware of.  Using the recent 1.0rc's of course :-)
> 
> There are only two options that have worked for my email given the
> size of my folders recently (I don't file things, I just have them
> in one big folder and sort/search as required):
> 
> - Exchange Server (2003) with Entorage using webdav or Outlook 2003
>   (cached mode, using MAPI), but note the IMAP performance is
>   pretty shocking (web acces, webdav and MAPI all work very well).
> 
> - Dovecot/Maildir++/reiserfs with Entorage (using IMAP, set to
>   save full messages on client), using Postfix for delivery.
> 
> I've also seen that Dovecot/Maildir++/WAFL works quite well for
> large  installs, but WAFL isn't an option for smaller
> installations :-)

Hmm, interesting.

I thought Dovecot was slow. But see,
http://www.isode.com/whitepapers/mbox-benchmark.html
(though they don't say what versions of the software was benchmarked)

Any thoughts?

Luyer: what do PacNet use?


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