Re: Enterprise mail server

From: Alexander Dalloz (ad+lists_at_uni-x.org)
Date: 12/05/04

  • Next message: David Cary Hart: "Re: djbdns" 
    To: For users of Fedora Core releases <fedora-list@redhat.com>
Date: Sun, 05 Dec 2004 17:56:59 +0100

    Am So, den 05.12.2004 schrieb Chris Mason um 15:13:

    > I'm looking for feedback on experiences of implementing an enterprise mail
    > server with IMAP and webmail, preferably groupware, on our Dual Xeon Fedora
    > server. We currently have sendmail, uw-imap, squirrelmail, in standard
    > Redhat configuration, and we are having huge load problems as the present
    > setup is not capable of supporting the needs of our users. Large mail
    > folders bring the server to it's knees. We only have 25 users but they
    > travel and use the mail system as a filing system, routinely saving 10MB
    > emails and never cleaning up old mail.

    uw-imapd is known to be dog slow when it comes to large mboxes. There
    are too many reports about it causing much CPU occupation when
    processing (high loads then). I encourage you to migrate to a
    Cyrus-IMAPd (coming with FC2 and FC3) - runs impressively fast even on
    my very old and weak AMD K6-3 450 MHz, handling 1,5 GB mail -, keeping
    Sendmail. I can not say how well SquirrelMail as a webmailer is
    performing. What I highly recommend is to use an IMAP proxy between the
    Cyrus-IMAPd and SquirrelMail. That can improve webmail speed a lot. As
    SquirrelMail is PHP written I recommend using the Turck MMCache which
    improves the speed of PHP applications a lot. Maybe try as an alternate
    to SquirrelMail the Horde framework (www.horde.org). It runs very well
    for me and there are very large mail environments were it proofed it's
    power.

    > We also need more groupware type features such as file sharing, messaging
    > and calendaring. I am looking at Binari, Groupwise, Surgemail, and
    > opengroupware which would involve more work to implement for me.

    OpenGroupware is IMHO the only free application in your list. If costs
    play a role and you are able to implement and customize it to your need,
    then it is certainly the tool of choice.

    > Chris Mason

    Alexander 

    -- 
Alexander Dalloz | Enger, Germany | new address - new key: 0xB366A773
legal statement: http://www.uni-x.org/legal.html
Fedora GNU/Linux Core 2 (Tettnang) on Athlon kernel 2.6.9-1.6_FC2smp 
Serendipity 17:56:54 up 1 day, 7:15, load average: 0.17, 0.20, 0.19 



    


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