Re: e-postage stamps, was Welcome to the new(ish) ASRG list

On 3/17/2013 2:12 AM, Franck Martin wrote:
> Why don't you ask the friend of your friend to give us this list and then cross check it yourself?
>
> This list requires data not "I have heard somewhere..."

It isn't a "friend of a friend". This is my own personal friend
directly... who explained this situation to me over the phone as he was
watching the rejections in real time... where he was getting me to talk
him through fixing his problem and explaining the symptoms to me as it
was happening. Sorry that I didn't write down the actual domain names.

The situation with a Cox Communications person was Alex Marinkovic,
answering an e-mail I had sent him... with an e-mail he sent directly to
me. At the time of his answer, he was "Responsible for the design and
implementation of all anti-spam/anti-virus systems for the Cox High
Speed Internet service." to quote from his linked-in page. (Right now,
I'm actually looking at the e-mail he sent me, dated 8/9/2011 4:58 PM...
would you like for me to forward that to you off-list?)

We're getting buried in minutia. You've already admitted that Comcast
does this. I've established that Cox does, too. I'm certain that those
are not the only large ISPs that do this. BUT THAT IS BESIDES THE POINT...

...the point is that, as a result of enough recipients' mail systems
require an rDNS... that the industry, across-the-board, now has a
commonly accepted "industry standard" that mail sending IPs (a) should
have an rDNS, and (b) of the ones that don't, they often get blocked,
and it is then considered the sender's fault.

knit-pick minutia if you like... but neither yours or my opinion doesn't
change the fact that if an ESP or ISP today hired a CTO who ordered the
deletion of the rDNS entries for their sending IPs and fought vigorously
to keep it that way... that person wouldn't last in their job more than
a week.. probably not more than a day.

-- 
Rob McEwen
http://dnsbl.invaluement.com/
[email protected]
+1 (478) 475-9032