If you currently use DSL and/or Cablemodem you may notice soon that many
places won't accept mail directly from you anyway. This personally
happened to me a few months ago. I ran my own outbound mail server on
my local network at home, and pulled my inbound mail from various
sources. It has worked great for years (as the Internet was intended to
be used, I'll agree) until Yahoo started rejecting my mail to it's
recipients because it came from a "consumer service" address (I use
Comcast cable broadband service, formerly AT&T). Then RoadRunner
started doing it. Of course I emailed, called, and complained about
this, to no avail. I can only assume that others will follow suit. I'm
currently sending mail outbound through one of my inbound servers at a
co-location facility, just to guarantee that my mail will get delivered.
At least with a method like SPF I will be able to define via DNS which
servers are allowed to send mail for my domains, which keeps me in
control, assuming that I actually do control the domains that I'm
sending mail as.
I agree with you in your ideals, however I fear that the Internet will
grow beyond what it was originally meant to do, as it already has in
some respects. Compound this with companies like Yahoo and Roadrunner
who are already making these decisions that directly effect the methods,
and perhaps it's time to update the methods that the Internet utilizes
in order to address the problems that are surfacing due to the growth.
---
Dustin D. Trammell
Vulnerability Remediation Alchemist
Citadel Security Software, Inc.
-----Original Message-----
From: Phil Karn [mailto:karn(_at_)ka9q(_dot_)net]
Sent: Wednesday, October 08, 2003 11:11 PM
To: spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
Subject: Re: [spf-discuss] Why not just use S/MIME or GPG signatures?
---8<---(snip)---8<---
It is *precisely* the "do the work at the hubs" approach that is so
dangerous here. I don't want my ISP arbitrarily deciding who can and
can't send me mail, and I don't think you do either. I insist on
reserving that control, and it's one of the main reasons I run my own
incoming mail server alongside my own outbound relay.
I have no problem with delegating the spam filtering job to my ISP as
long as I remain in ultimate control, and can revoke my delegation at
any time if the ISP doesn't follow my wishes. I don't see that as true
for SPF. It's totally ISP-centric.
---8<---(snip)---8<---
Phil
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