Re: Gateway >> Mail Server

From: luke (luke@s-mail.com)
Date: 04/04/03

  • Next message: Chris Rasmussen: "Linux tuning/optimisation" 
    From: luke@s-mail.com (luke)
Date: 4 Apr 2003 01:14:52 -0800

    Joe <joe@jretrading.com> wrote in message

    > Do you need to accept SMTP? If you're collecting from a smarthost then
    > run Fetchmail on the gateway, collecting from your ISP by POP3 and
    > passing the mail to Exchange by SMTP. That avoids exposing port 25, and
    > Exchange Server in particular, to the net.
    >
    > In that case, no port-forwarding or similar is necessary. There are
    > plenty of examples of iptables NAT rules for basic firewalls around,
    > none of which need to specify ports. As you say, outgoing emails will be
    > handled without specific rules. You need the usual "accept anything
    > going out from the LAN, and just related and established coming in"
    > rules.

    Hi Joe,

    Thanks for your reply. Mail comes from an up-stream server (are domain
    has an mx entry pointing to another exchange box(outward facing) which
    has a forward rule to our exchange box) so mail is pushed to us. I
    persume that any mail on the upstream server would stay on its virtual
    smtp server queue until received/accepted by our exchange box.

    Not to bothered about outside exposure as we are situated on a
    buisness park, so it is a NATted twice.

    Is fetchmail fairly straightforward to set up? I have the webmin
    interface running?

    Thanks Again

    Luke

  • Next message: Chris Rasmussen: "Linux tuning/optimisation"

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