why IPv6 isn't ready for prime time, SMTP edition

John Levine johnl at iecc.com
Tue Mar 25 22:19:39 UTC 2014

In article <5331EDAB.8000303 at 2mbit.com> you write:
>On 3/25/14, 11:56 AM, John Levine wrote:
>> I think this would be a good time to fix your mail server setup.
>> You're never going to get much v6 mail delivered without rDNS, because
>> receivers won't even look at your mail to see if it's authenticated.
>> CenturyLink is reasonably technically clued so it shouldn't be
>> impossible to get them to fix it.
>Nothing wrong with my mail server setup, except the lack of RDNS. 
>Lacking reverse should be one of many things to consider with rejecting 
>e-mails, but should not be the only condition.

"It would be inconvenient for me to make this change, therefore
everyone else should change instead."

Don't hold your breath.


More information about the NANOG mailing list