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List:       courier-users
Subject:    Re: [courier-users] How to disable ipv6
From:       Gordon Messmer <gordon.messmer () gmail ! com>
Date:       2016-03-31 16:24:52
Message-ID: 56FD4F54.9030800 () gmail ! com
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On 03/30/2016 05:02 PM, Sam Varshavchik wrote:
> As such, in order for IPv6 reverse DNS to work, your internet provider 
> has to delegate reverse DNS to you.

They could, but I'm not sure why they would have to.

Most of the ISPs and hosting providers that I've worked with (Integra, 
Qwest, Comcast Business, NetRiver, etc) do not delegate reverse DNS, but 
do update PTRs for their customers upon request.

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