From owner-freebsd-questions@FreeBSD.ORG  Wed Feb  8 07:56:09 2006
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Date: Wed, 08 Feb 2006 08:55:56 +0100
From: Martin Hudec <corwin@aeternal.net>
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Subject: Re: Large imap server.
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Hello,

Bill Campbell wrote:
> On Tue, Feb 07, 2006, Albert Shih wrote:
>> I search some advice for large imap server.
>>
>> For me large is : 1000 users with 1 Go mails for each users. And every=

>> users check by imap/pop those mail every 2 or 3 minutes.
>>
>> What's the =ABbest=BB imap server ? Cyrus Imap or Courier-Imap ? (plea=
se this
>> is not a troll).
>=20
> I prefer Courier-imap because it uses Maildir storage while Cyrus
> uses something similar in that it stores each message in a file,
> but Cyrus also maintains index files which can get corrupted.
>=20
> We have several systems running courier-imap with 6000+ mailboxes
> on a single server without problems.

Dovecot has also nice feature of proxying :) - see more:
http://wiki.dovecot.org/ImapProxy

Cheers,
Martin