Re: mail software for freebsd

From: Bikrant Neupane (bikrant_at_wlink.com.np)
Date: 04/08/05

  • Next message: Christian Damm: "Re: mail software for freebsd" 
    To: freebsd-isp@freebsd.org, vaida bogdan <vaida.bogdan@gmail.com>
Date: Fri, 8 Apr 2005 11:16:21 +0545

    We have been using qpsmtpd in our mx for almost 2 years now. It is written in
    perl and is modular but resource utilization is very high in terms of cpu and
    memory usage.

    It checks for:

    early talkers
    spam helo
    max limit to unrecognized commands
    dns resolve
    tarpit limit
    badmailfrom
    badrcptto
    dnsbl
    recipient verification from radius for local domains
    spamassassin
    grey listing

    and lot more.

    By using above filters I have been able to filter out more than 70% of the
    mails that my MX receives. And some modules can reject mails just by reading
    the mail headers even before getting the data. This does save bandwidth on my
    link. Qpsmtpd finally delivers the mail to qmail-queue. However I have
    patched qmail to integrate it with qmail-scanner. Qmail-scanner then calls
    clamdscan which checks for virus with the clamd running on another server.

    But obviously this system is not fast!!! and is heavy on resources and that's
    the only issue I have. User validity check against radius is the main feature
    for which we are using qpsmtpd.

    Can you one suggest me a better mta than this with all those features :)

    regards,
    Bikrant

    On Sunday 03 April 2005 14:56, vaida bogdan wrote:
    > Hy, I woule like to know which mail setup that has the following
    > characteristics you use for primary mail servers:
    > - fast and reliable delivery
    > - anti spam/phishing/virii filterring
    >
    > I would like to reduce the number of packages used in my current
    > configuration or possibly change it as I have a hard time debugging
    > problems.
    > - postfix+qmail maildir
    > - courier imap
    > - razor agents
    > - procmail
    > - spamassassin
    > - amavis
    > - clamav
    > - cyrus sasl2
    >
    > Thanks,
    > Bogdan
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