From owner-freebsd-isp@FreeBSD.ORG Fri Jun 25 22:05:48 2004 Return-Path: Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4285916A4CE for ; Fri, 25 Jun 2004 22:05:48 +0000 (GMT) Received: from mgw1.MEIway.com (mgw1.meiway.com [81.255.84.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8330743D48 for ; Fri, 25 Jun 2004 22:05:47 +0000 (GMT) (envelope-from LConrad@Go2France.com) Received: from VirusGate.MEIway.com (virusgate.meiway.com [81.255.84.76]) by mgw1.MEIway.com (Postfix Relay Hub) with ESMTP id D6EDD47194D for ; Sat, 26 Jun 2004 00:07:28 +0200 (CEST) (envelope-from LConrad@Go2France.com) Received: from localhost (localhost.MEIWay.com [127.0.0.1]) by VirusGate.MEIway.com (Postfix) with SMTP id 4D569386701 for ; Sat, 26 Jun 2004 00:11:03 +0200 (CEST) (envelope-from LConrad@Go2France.com) X-AV-Checked: Sat Jun 26 00:11:03 2004 virusgate.meiway.com Received: from mail.Go2France.com (ms1.meiway.com [81.255.84.73]) by VirusGate.MEIway.com (Postfix) with ESMTP id 2E8E13866F9 for ; Sat, 26 Jun 2004 00:11:03 +0200 (CEST) (envelope-from LConrad@Go2France.com) Received: from tx2.Go2France.com [24.227.147.227] by mail.Go2France.com with ESMTP (SMTPD32-7.07) id A0C11F7204BA; Sat, 26 Jun 2004 00:01:37 +0200 Message-Id: <6.1.1.1.2.20040625170024.16c50ec0@81.255.84.73> X-Sender: LConrad@Go2France.com@81.255.84.73 X-Mailer: QUALCOMM Windows Eudora Version 6.1.1.1 Date: Fri, 25 Jun 2004 17:04:55 -0500 To: freebsd-isp@freebsd.org From: Len Conrad In-Reply-To: <028201c45ade$5a6b2f70$6400a8c0@chivas> References: <028201c45ade$5a6b2f70$6400a8c0@chivas> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Subject: Re: ipfw and mail X-BeenThere: freebsd-isp@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Internet Services Providers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jun 2004 22:05:48 -0000 >I want to open a new port (2525) and forward all packets from 2525 to 25 >so, they can use mail. try to fit into "well known ports/services", where port 587 is the "mail submission service" (SMTP client/MUA submitting to an MTA for relay/injection into the SMTP network of MTAs). Many think that all mail submitted to port 587 should require authentication. Just have your MTA listen on port 25 and port 587, keep the firewall out of the picture. Port 25 is the mail relay port (MTA relays to MTA), ab/used as the mail submission port. Len _____________________________________________________________________ http://IMGate.MEIway.com : free anti-spam gateway, runs on 1000's of sites