Re: SPF advocacy

(I've looked, but if I'm making some wrong assumptions, i apologize in  
advance..)
What we really care about is the authentication that the headers listed  
is truthful.  As long as one of the headers (Sender:? ) with the email  
address is truthful, and the Reiceved-From: are good, we can track  
spam, and do blocking, as needed.
A short bit of discourse:

I have my own mailserver, at my apt, on earthlink.  I use their SMTP  
relay servers, for now.
I may have to set my Sender:  to be username(_at_)earthlink(_dot_)net even though  
my From: is mbarr(_at_)example(_dot_)net(_dot_)
This may end up with some email clients needing to be able to set the  
Sender: header, in addition to the From: & Reply-To:

Now, what I will probably do is just make sure that I can send out via  
my own servers, or add the ptr to earthlink, for my domain.  For a user  
that wants to send as   Meep(_at_)uni(_dot_)edu, but from Earthlink, it might be a  
bit harder, until there is an ability to set Sender:
( Throughout this, I've been assuming the envelope data is stored in  
the Sender: header.  I could be wrong on that one..  Just roll with it  
:-)
They will either have to set the envelope to an address the SMTP server  
is authorized for, or the Rewriting will have to happen.
The Uni people will have to live.. or go with +all or  ?all.  Or just  
allow their old alumni to connect back into the net for SMTP.
(I doubt the later part will happen.  Too much work for managing  
authentication.  But at least it's not storage space.. just the  
temporary SMTP relay.)
Matthew

 --------------------------------
Matthew Barr
mbarr(_at_)datalyte(_dot_)com
Managing Partner
Datalyte Consulting, LLC.
(646) 765-6878    (cell)
On Jan 27, 2004, at 2:23 PM, Vivien M. wrote:

> > -----Original Message-----
> > From: owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
> > [mailto:owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com] On Behalf Of 
> > ck(_at_)kuckuk(_dot_)com
> > Sent: January 26, 2004 4:47 PM
> > To: spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
> > Subject: Re: [spf-discuss] SPF advocacy
> >
> >
> > > > > I think agreement can be reached in the cases where
> > > > > - companies tell their employees which SMTP server to use
> > > > What about large corporations where the company does not tell the
> > > > employees what SMP server to use?
> > All the companies I know want to have tight control over the
> > e-mail that is sent or received by their employees, and they
> > mandate using specific software (Notes, Groupwise, etc) and
> > sending and receiving all their e-mail via central servers.
> > Home office workers usually connect via VPN to their
> > company's networks. So I don't see any problems here except
> > for big corporations who are just getting their feet wet with
> > Internet technology.
> What about educational institutions? If we want to have this debate  
> again
> (this horse just won't die), you need to look at more than your
> publicly-traded Fortune 500 companies.
>
> That said, I don't really want to resuccitate this horse... But I have
> argued in the past (see the archives) and will argue again that there  
> are
> many legitimate reasons why someone would need to use a
> non-domain-owner-provided SMTP server in cases where the domain  
> owner's SMTP
> follows the old "relay for your local IPs" model. Such a domain owner  
> could
> not, without severely inconveniencing some people (many of whom are at  
> the
> bottom of the organizational food chain), deploy SPF without  
> reconsidering
> how people in this "grey" zone use email.
>
> Vivien
>
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