Damn. Forgot to hit "reply all" -- my bad
-------- Forwarded Message -------- Subject: Re: DOvecot requires both IPv4 and IPV6 to start Date: Mon, 4 Sep 2023 15:35:51 -0700 From: Stephen Satchell list@satchell.net Reply-To: list@satchell.net To: Arjen de Korte build+dovecot@de-korte.org
On 9/4/23 2:40 PM, Arjen de Korte wrote:
This document was written something like two decades ago and pretty much all arguments against IPv6 are no longer relevant anymore. In most cases nowadays, the user experience for IPv6 will be far superior over CGNAT connections which unfortunately become the standard due to the increasing cost of IPv4 addresses. Running services over IPv6 may have been experimental and prone with not so fun problems to diagnose in 2013, but today this is no longer the case.
Running a business? Subscribing to business Internet? Are IPv6 address blocks available? Does IPv6 routing work properly?
OK, even though the service desk doesn't know how to answer the above questions about IPv6 correctly, the information *is* available if you dig hard enough. And it seems to work.
Can you get a PTR6 record for your mail server?
No. At least, not from my upstream. Begins with "A" and ends with "T". Don't even ask about reverse delegations, the blank stare will scare you.
(I apologize to everyone on this list. The above diatribe more correctly lives on mailing lists for Sendmail, Postfix, Exim, and other packages that actually originate mail exchanges.)