On Thu, Apr 08, 2004 at 11:05:12AM -0600, Doug Royer wrote:
Most ISPs will not push reverse DNS entries for domains where they are not
the primary DNS because they can not verify you have the right to use
that domain without some labor cost to them, so they do not do it.
It is not the task of the ISP to verify this.
They have a customer and they have their address. If the customer
oders a PTR entry, we put it there. If someone has a problem with that
PTR record it is a problem between him and the customer.
If the reverse map points to bogus.com and I own the IP space, guess
where the complaints go? It still goes to the IP owner. Nothing changes,
nothing that I can see is gained.
If you own the IP space, you put the PTR to "bogus.com" there. So why
should the complaints go to anybody else?
Back to my other question. Are they all correct all of the time?
Or do you just take there word for it?
Have they ever forgotten to tell you of a change.
It is no my problem as an ISP.
And if someone only allows paranoid checked hosts (PTR matches A)
through and they fail it is their problem.
No its not, if I own the IP space - I get the spam complaints, not them.
So what? If you own the IP space you SHOULD get the complaints. If you
don't own it any longer because you gave away some IP space, you better
have a contract. If the customer spams and you get the complaints, bill
them or kick them.
The spammers
what it that way. Is all they would have to do is not tell me they have
their own MTA
and I still get the complaints and have to figure it out. What is gained
without some
kind of MTA or From: validation?
If (with MTAMARK) there is no "MTA=yes" record, nobody would accept
theit messages.
That has labor costs - many say 'no'.
Than get an ISP that says "yes", problem solved.
They do not have to provide it, and many do not. They point them to
themselves
and do not want to hire someone to manage the reverse DNS maps.
Than get an ISP that says does, problem solved.
And if they want to have mail.example.com they get it and example.com
may sue them if they don't like it.
Too late, the spam was sent because they did not tell you, ran their own
MTA.
Paid their bill and left. Now the ISP has to headache - what changed?
You can even bill them afterwards, do it. And with e.g. MTAMARK nobody
would accept their MTA without proper MTA=yes records.
No it is the ISPs problem. So again that is the way it is now, what is
gained?
Says who?
I run an ISP since 1994 and I never had any of the problems you describe,
and we do manage revDNS.
But this discussion is offtopic for this group now, so I'll end it here.
\Maex
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