From owner-freebsd-questions Mon Jun 1 16:42:26 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA11304 for freebsd-questions-outgoing; Mon, 1 Jun 1998 16:42:26 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from nwalme.pair.com (nwalme.pair.com [209.68.1.123]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id QAA11284 for ; Mon, 1 Jun 1998 16:42:15 -0700 (PDT) (envelope-from dima@nwalme.pair.com) Received: (from dima@localhost) by nwalme.pair.com (8.9.0/8.6.12) id TAA13457; Mon, 1 Jun 1998 19:42:07 -0400 (EDT) Message-Id: <199806012342.TAA13457@nwalme.pair.com> X-Envelope-To: freebsd-questions@FreeBSD.ORG Subject: Re: Restricting mail server access To: rjb@typeline.com (Bob Badaracco) Date: Mon, 1 Jun 1998 19:42:07 -0400 (EDT) Cc: freebsd-questions@FreeBSD.ORG In-Reply-To: <3572F1EB.605E9CCC@typeline.com> from Bob Badaracco at "Jun 1, 98 11:24:43 am" From: Dima Dorfman X-Mailer: ELM [version 2.4ME+ PL22 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > 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 [Attachment, skipping...] -- Dima Dorfman (dima@zwb.net) "640k ought to be enough for anybody." - Bill Gates, 1981 Micro$oft Sucks! FreeBSD Rules! http://www.freebsd.org/ Finger dima@zwb.net for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message