Date: Wed, 24 Jan 2001 16:32:40 -0600 From: Gerald Combs <gerald@zing.org> Subject: Re: Brian's Newbie question of the day Message-ID: <Pine.LNX.4.10.10101241623170.8911-100000@pow.zing.org>
On Wed, 24 Jan 2001, Brian Densmore wrote:
> If I take my sendmail server out of daemon mode and have cron run it every
> 10 minutes, so as to enhance system security. What happens if someone tries
> to send mail to the hosted domains during that time? Will some application
> "wake" up sendmail to receive or does it go into that blackhole of failed
> mail delivery? I don't have a mail forwarder anywhere.
Setting up sendmail in this way (taking its entries out of /etc/rc.d and
running 'sendmail -q' from cron periodically) renders sendmail as an
outgoing-only service. The security comes from the fact that there isn't
anything listening on port 25, ever. This is usually how I install a
server, unless it's a mail server of course.
If you want to receive mail and you're concerned about security, then
don't run sendmail. Run postfix or qmail instead. I've been running
postfix for a while now, and am quite happy with it. It's faster and
easier to configure, to boot.
>
> Thanks,
> Brian Densmore
> W: densmoreb@ctbsonline.com <mailto:densmoreb@ctbsonline.com>
> http://www.ctbsonline.com <http://www.ctbsonline.com>
>
> H: brian@aMason.net <mailto:brian@aMason.net>
> http://www.aMason.net <http://www.aMason.net>
>
> LIFE Is For Everyone, stop domestic violence
> http://www.RoseFire.org <http://www.RoseFire.org>
>
>
>
> Best Regards,
> Brian
>
> Brian <mailto:DensmoreB@ctbsonline.com> Densmore
>
>
> Associate
> Computech Business Solutions <http://www.ctbsonline.com/>
> voice: (816) 880-0988
> fax: (816) 880-0998
> :-{)>
>
>
>
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