Re: [Asrg] What are the IPs that sends mail for a domain?

Bill Cole <> Mon, 29 June 2009 16:35 UTC

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Subject: Re: [Asrg] What are the IPs that sends mail for a domain?
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Douglas Otis wrote, On 6/16/09 8:24 PM:
> On Jun 16, 2009, at 3:55 PM, John Levine wrote:


>> We've had a variety of proposals to identify mail client hosts. See
> The CSV effort proved most providers do not want their MTAs identified
> as belonging to them, even when it could improve email acceptance.

Not really. As far as I can tell, provider attention was not controlled for 
in that experiment.

In my experience the awareness of existing Internet standards, the Internet 
standards process, and the "open unstructured testing in production" model 
that dominates the development of new protocol features among people running 
mail systems and companies selling mail services is very low. I would be 
shocked if most providers of mail services even today are aware of the CSV 
proposals' existence at any level, either corporately or among their 
technical staff.

> This
> might be especially true now after their support staff has been reduced.

Obviously that plays strongly into the awareness issue.