Re: fetchmail works -- but so does sendmail

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Article #151

#151

From: Graham Murray
Date: Mon, 10 May 1999 00:00

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In demon.ip.support.unix, philh@vision25.demon.co.uk (Phil Hunt) writes:

> In article <g261h7.774.ln@anacon.demon.co.uk>
>            mpe@anacon.demon.co.uk "Mark Evans" writes:
> > 1) Have sendmail only accept connections from 127.0.0.1. e.g. using
> > ipfwadm/ipchains.
> 
> Would this let me send mail? IOW, if I did this, would it stop sendmail
> receiving amil from Demon, but still allow it to send mail out.

Yes it would, as long as your local system is configured as
127.0.0.1. Another way of doing this, using ipchains, is to use a
ruleset like

ipchains -A input -i lo -p tcp --dport 25 -j ACCEPT
ipchains -A input -p tcp --dport 25 -l -y -j DENY

This will only allow connections to the SMTP daemon from the loopback
interface and not from ppp (or ethernet etc if fitted)

Technical Details

Message-ID: <m26761o2pg.fsf@barnowl.demon.co.uk>

Path: arc1-ca.pugleaf.net!unknown!not-for-mail

References: <926159547snz@vision25.demon.co.uk> <g261h7.774.ln@anacon.demon.co.uk> <926259360snz@vision25.demon.co.uk>

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From: Graham Murray <graham@barnowl.demon.co.uk>
Subject: Re: fetchmail works -- but so does sendmail
Date: 1999/05/10
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