Re: Port 25 inbound blocking

[David Farber <dave () farber net>]

Begin forwarded message:

From: Dave CROCKER <dhc2 () dcrocker net>
Date: February 25, 2009 12:11:44 AM EST
To: dave () farber net
Cc: ip <ip () v2 listbox com>, Paula Keezer <paula_ke () yahoo com>
Subject: Re: [IP] Port 25 inbound blocking
Reply-To: dcrocker () bbiw net


> From: Paula Keezer <paula_ke () yahoo com>
...
> Please reconsider the decision to block inbound port 25.  I  
> understand the spam fighting efforts for outbound port 25.  Creating  
> alternate outbound paths for legitimate email users is fairly easy  
> and does not stifle innovative uses of the web.  However, blocking  
> inbound port 25 is erroneous and will stifle innovation amongst  
> legitimate users.


No.  Really it won't. The innovation has been in splitting submission  
from relaying, permitting much better control of the submission path,  
such as requiring that it be authenticated.

For remote (and local) submission, use port 587.  It's the standard  
for submission.  All modern email user software can be configured to  
use it.  All modern email submission servers also can support it.

  Email Submission Operations:
  Access and Accountability Requirements

  <http://tools.ietf.org/html/rfc5068>

d/
--

 Dave Crocker
 Brandenburg InternetWorking
 bbiw.net




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