Re: mail software for freebsd

From: Christian Damm (christian.damm_at_diewebmaster.at)
Date: 04/08/05

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    Date: Fri, 08 Apr 2005 10:03:27 +0200
To: Bikrant Neupane <bikrant@wlink.com.np>

    Bikrant Neupane schrieb:
    > 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 :)

    if you are looking for an extremely fast, stable, secure and scalable
    MTA with top notch anti-spam features out of the box, go with postfix -
    you wont regret it...all of the anti ube/uce stuff you mentioned above
    is possible with postfix (some of them with a little bit of tweaking)
    because of postfix`s very modular architecture.

    >
    >
    > 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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    -- 
mfg.
christian damm
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