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Date:      Mon, 1 Jun 1998 19:42:07 -0400 (EDT)
From:      Dima Dorfman <dima@zwb.net>
To:        rjb@typeline.com (Bob Badaracco)
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Restricting mail server access
Message-ID:  <199806012342.TAA13457@nwalme.pair.com>
In-Reply-To: <3572F1EB.605E9CCC@typeline.com> from Bob Badaracco at "Jun 1, 98 11:24:43 am"

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> Our mail server is running the latest version of Sendmail under FreeBSD

version 8.9.0?

> along with qpopper
> as the POP3 mail server. We have 10 local accounts on this server and
> would like to restrict
> external access all together or from specific domains. In other words we
> 
> don't want our employees using our mail server address in their browsers
> 
> to access company email accounts from their personal
> ISP connection.
> 
> I've read most of the Sendmail FAQ's and most of the FreeBSD docs
> here but don't have a clue
> how to handle this.
> 

Sendmail can handle this.  Disabling relaying will disallow anyone to use
your SMTP server to send mail unless it's to your domain.  See
http://www.sendmail.org/m4/anti-spam.html for details.  I don't know about
QPopper.

Another solutions will be to enable a firewall, and disallow anythng on
port 25 and 110 outside your IP network (or whereever else your employees
are).


Hope this helps :-)

> 
> 

Content-Description: Card for Bob Badaracco

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-- 
Dima Dorfman (dima@zwb.net)

"640k ought to be enough for anybody." - Bill Gates, 1981
Micro$oft Sucks!  FreeBSD Rules!  http://www.freebsd.org/

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