From owner-freebsd-questions  Thu Aug 21 11:29:46 1997
Return-Path: <owner-freebsd-questions>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id LAA10412
          for questions-outgoing; Thu, 21 Aug 1997 11:29:46 -0700 (PDT)
Received: from horton.iaces.com (proot@horton.iaces.com [204.147.87.98])
          by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id LAA10405
          for <freebsd-questions@FreeBSD.ORG>; Thu, 21 Aug 1997 11:29:43 -0700 (PDT)
Received: (from proot@localhost)
	by horton.iaces.com (8.8.5/8.8.5) id NAA02496;
	Thu, 21 Aug 1997 13:29:39 -0500 (CDT)
From: "Paul T. Root" <proot@horton.iaces.com>
Message-Id: <199708211829.NAA02496@horton.iaces.com>
Subject: Re: Question:
To: balue@apolloi.com
Date: Thu, 21 Aug 1997 13:29:39 -0500 (CDT)
Cc: freebsd-questions@FreeBSD.ORG
In-Reply-To: <33FC8377.559E@apolloi.com> from balue at "Aug 21, 97 11:05:43 am"
X-Organization: !nterprise Networking Services - ACES
X-Phone: (612) 663-1979
X-Fax: (612) 663-8030
X-Page: (800) SKY-PAGE PIN: 537-7270
X-Address: 200 S. 5th St., Suite 1100
X-Address: Minneapolis, MN 55402
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
X-Loop: FreeBSD.org
Precedence: bulk

In a previous message, balue said:
> I am able to telnet into port 25, thus enabling me to view 
> all the subscribers in my list.  How do I disable the ability
> to telnet into port 25?

Turn off sendmail. You probably don't want to do that. 
What you want to do is use majordomo, and/or configure 
sendmail to not respond to vrfy.

Paul.

-- 
when everyone is out to get you, being paranoid is just good thinking.
                                    --Dr. Johnny Fever