Stopping name server abuse

Matus UHLAR - fantomas uhlar at
Tue Jun 26 08:28:51 UTC 2018

>> On Sun, Jun 24, 2018 at 04:30:08PM -0400, Alex wrote:
>> > We had a former customer who parked about 300 domains with his
>> > registry on our server but is no longer a customer and hasn't moved
>> > his domains. There aren't any hosts behind the domains.
>> >
>> > Is there anything more I can do to block/prevent them from continually
>> > querying my system outside of just redirecting them to localhost or
>> > something?
>> >
>> > It's not a terrible amount of traffic, but it's pretty substantial.
>> >
>> > Unfortunately asking him nicely didn't work.

>On Sun, Jun 24, 2018, at 15:48, Mukund Sivaraman wrote:
>> Serve the customer an invoice. They're his domains after all, and he's
>> using up your resources. You can identify him and show that your
>> resources are being used because he has not moved the delegations.

On 25.06.18 09:06, Dave Warren wrote:
>Absent a situation where the customer has agreed to purchase this service,
> the only result sending an invoice would have is that you have increased
> your loss by adding wasted time, toner, paper, an envelope and the cost of
> postage.
>You might flag the customer's attention, but since "Unfortunately asking
> him nicely didn't work." it seems unlikely that repeatedly annoying the
> individual repeatedly will be productive.

I believe this can eb the same situation as putting images owned by getty to
your website. They will send you invoice with higher price than if you had a

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