> On Jun 8, 2018, at 11:39 PM, Shawn Landden <sh...@git.icu> wrote:
>
> Does gmail universally block 6to4 addresses, or is there something else I am
> doing wrong?
>
> Jun 07 23:32:14 www.git.icu postfix/smtp[19358]: 0695A2409C:
> to=<sland...@gmail.com>, orig_to=<sh...@git.icu>,
> relay=gmail-smtp-in.l.google.com[2607:f8b0:400d:c08::1b]:25, delay=1.6,
> delays=0.12/0.07/0.84/0.56, dsn=5.7.1, status=bounced (host
> gmail-smtp-in.l.google.com[2607:f8b0:400d:c08::1b] said: 550-5.7.1
> [2002:c62e:c6c6::1] Our system has detected that this message does not
> 550-5.7.1 meet IPv6 sending guidelines regarding PTR records and
> authentication 550-5.7.1 . Please review 550-5.7.1
> https://support.google.com/mail/?p=IPv6AuthError for more information 550
> 5.7.1 . w38-v6si3369064qtc.330 - gsmtp (in reply to end of DATA command))
The fine message says (and dig confirms) that your 6to4
address [2002:c62e:c6c6::1] lacks PTR records. You might
fix that first:
; <<>> DiG 9.11.2-P1 <<>> -x 2002:c62e:c6c6::1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22961
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 8192
;; QUESTION SECTION:
;1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.6.c.6.c.e.2.6.c.2.0.0.2.ip6.arpa. IN
PTR
--
Viktor.
