DoveCot vs Cyrus-Imapd Performance

[Kevin Fries]

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Les Mikesell wrote:
| On Fri, 2005-01-14 at 00:00, Aleksandar Milivojevic wrote:
|
|
|>And exactly how scalable are user accounts (the ones stored in flat
file called
|>/etc/passwd)?  That will not scale well.
|
|
| I think you know that's irrelevant for anything using PAM.  Dovecot is
| equally capable.

I have a mail server that supports approximately 50-60 radio stations
across the country with approximately 700 end users.  Because of the
dispersant number of users and geographic locations, I have set up a
certain number of users at the main office to use Webmin to add accounts
to the mail server.  NOBODY is allowed shell access to the box but me,
and the Webmin limits these people's access to the add user applet.

Despite using system accounts which Aleksandar thinks is unscalable,
this setup works perfectly.  As new radio stations come online, we
create a simple text file and accounts are created in batch.  As each
account is crated, their mail box is set up.

Right now, I use teapop on that server, but am seriously considering
converting that to Dovecot.  The load on my server from that many user
accounts is minimal.

I went from 4 accounts to close to 700 accounts in under a year.  I
expect approximately 2k-3k by by the end of the year.  Scalability of
Linux in general is fantastic, I am not sure how much more I need.
Without Cyrus, I am scaling quite nicely and the system is stable.  You
are right, Aleksandar is making much more out of this issue than is
warranted.

- --
Kevin Fries
Network Administrator
Hydrologic Consultants, Inc of Colorado
(303) 969-8033    FAX: (303) 969-8357
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