From mboxrd@z Thu Jan 1 00:00:00 1970 Path: main.gmane.org!not-for-mail From: "Stefan Monnier " Newsgroups: gmane.emacs.help Subject: Re: Emacs 21.2, smtpmail and vm Date: 29 Jan 2003 13:53:00 -0500 Organization: Yale University Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Message-ID: <5l3cnb94ab.fsf@rum.cs.yale.edu> References: <5lbs21856e.fsf@rum.cs.yale.edu> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: main.gmane.org 1043866885 2251 80.91.224.249 (29 Jan 2003 19:01:25 GMT) X-Complaints-To: usenet@main.gmane.org NNTP-Posting-Date: Wed, 29 Jan 2003 19:01:25 +0000 (UTC) Return-path: Original-Received: from monty-python.gnu.org ([199.232.76.173]) by main.gmane.org with esmtp (Exim 3.35 #1 (Debian)) id 18dxSb-0000ZK-00 for ; Wed, 29 Jan 2003 20:01:21 +0100 Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org) by monty-python.gnu.org with esmtp (Exim 4.10.13) id 18dxRz-0000Mn-01 for gnu-help-gnu-emacs@m.gmane.org; Wed, 29 Jan 2003 14:00:43 -0500 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!logbridge.uoregon.edu!news.ycc.yale.edu!rum.cs.yale.edu!rum.cs.yale.edu Original-Newsgroups: gnu.emacs.help Original-Lines: 22 Original-NNTP-Posting-Host: rum.cs.yale.edu User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 X-Original-NNTP-Posting-Host: rum.cs.yale.edu X-Original-Trace: 29 Jan 2003 13:53:01 -0500, rum.cs.yale.edu Original-Xref: shelby.stanford.edu gnu.emacs.help:109537 Original-To: help-gnu-emacs@gnu.org X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1b5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Help: List-Post: List-Subscribe: , List-Archive: List-Unsubscribe: , Errors-To: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org Xref: main.gmane.org gmane.emacs.help:6056 X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:6056 >> Could anybody give me the skinny about "why would an ISP require SMTP AUTH"? > Isn't the answer the same as why authentication is required it all, in > any protocol? I'd only buy that if its use were systematic, which it obviously isn't. > If you are thinking that ISPs should use IP based ACLs to allow > relaying for their customers, it's not going to work with todays > computer habits (people travel with their laptop and expect the mail > server to continue to work). By "laptop" you mean "those things with small screens and shallow keyboards"? I must admit I don't know enough of how those things work when you try to use the Internet away from home (or office). But it seems you'll need to get your IP from some ISP which is responsible for routing to/from your IP and which has a mail server which you should be able to use (like you probably use their DNS server). And given such a context, it seems that IP-based authentication would be pretty safe for SMTP. Stefan