nanog mailing list archives
Re: Gmail (thus Nanog) rejecting ipv6 email
From: Michael Thomas <mike () mtcc com>
Date: Sat, 2 Apr 2022 18:37:43 -0700
On 4/2/22 6:16 PM, John Levine wrote:
It appears that Michael Thomas <mike () mtcc com> said:There are a lot of bits and bobs that one has to get right for mail to flow, amongst which: - IP -> PTR lookup -> that hostname lookup, and match to IP again - SPF - DKIM - DMARCYup. Gmail has made it quite clear that they will not accept v6 mail that isn't SPF or DKIM authenticated. DKIM is more work but works more reliably.- ARC (for mailinglists)Seriously spend zero time on ARC. It doesn't work as advertised ...Please, not this again. ARC does what it does, even if it doesn't do what you might wish it did instead.
I does what it does which is DKIM. That's it.
It's certainly not a magic ticket into an inbox but it is slowly helping undo DMARC mailing list damage. It's not important unless you forward mail like a mailing list does.
No it doesn't. It requires the previously unsolved problem of reputation which manifestly incapable of being solved. DMARC is not the problem, ancient mailing list technology which came before security requirements is the problem.
Mike
Current thread:
- Re: Gmail (thus Nanog) rejecting ipv6 email, (continued)
- Re: Gmail (thus Nanog) rejecting ipv6 email Jeroen Massar via NANOG (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Michael Thomas (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Jeroen Massar via NANOG (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Michael Thomas (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email John Levine (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Michael Thomas (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email John Levine (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Michael Thomas (Apr 02)
- Re: [nanog] Re: Gmail (thus Nanog) rejecting ipv6 email Dan Mahoney (Gushi) (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Michael Thomas (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Jeroen Massar via NANOG (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email John Levine (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Michael Thomas (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Michael Thomas (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email Robert Kisteleki (Apr 04)
- Re: Gmail (thus Nanog) rejecting ipv6 email Owen DeLong via NANOG (Apr 05)
- Re: Gmail (thus Nanog) rejecting ipv6 email Dan Mahoney (Gushi) (Apr 05)
- Re: [nanog] Re: Gmail (thus Nanog) rejecting ipv6 email Dan Mahoney (Gushi) (Apr 02)
- Re: Gmail (thus Nanog) rejecting ipv6 email from poorly configured senders John Levine (Apr 02)