On Wed, February 8, 2006 4:32 pm, Albert Shih wrote:
> What's big server?
> Actually I've many problem because I'm using mbox (historical reason),
> and I need to change this to Maildir. In the same time I have more users.
> But
> for me more users is
>
> ~ 1000 users

OK, this is not that big in terms of users.  Big would be in the 100,000+
range (and yes there are Courier installs this big).

> but what's large in my administration is the size of Mailbox and the # of
>  mail. If I want to ««sale»» my solution to the boss I think I need to
> present a solution to can handle 1Go mail for every one of users. And 50
> %
> of my users chekc the mail every 1-2 minutes 24/24 7/7.
>
> In your opinion and experience can I use just one server for this ?

The heavy users would put a greater load on your servers.  I would not
recommend just one box for SMTP, AV/Spam scanning and IMAP.  I would have
1 or 2 SMTP Servers (possibly more depending on the level scanning you are
doing per message).  And a handful of IMAP Servers.  All servers should
have access to the same mailstore server or, if it's in your budget get a
SAN.

> I've make some test (before I'm asking this mailing list) I've create a
> mailbox with ~ 30 000 messages (I've one case in my users...). With
> Courier-imap & Thunderbird (under FreeBSD 5.4-Stable with 1Go ram and
> Xeon 2.4 Ghz)
> I can't event delete those messages. I can understand this is extreme
> test. But I've some extremes users ;-)

Something is wrong with your test.  I have folders with 50,0000 - 100,000
messages and message deletion is still immediate.  Care to expound upon
the problem?

Jay
--
Jay Lee
Network / Systems Administrator
Information Technology Dept.
Philadelphia Biblical University
--


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