** Andy Smith <andy(a)bitfolk.com> [2013-09-02 21:06]:
I heard a rumour that Google is tightening up checks
on the reverse
DNS of IPv6 addresses:
http://list.waikato.ac.nz/pipermail/nznog/2013-September/020066.html
I've no idea if that is the case, but given that BitFolk VPSes do
have IPv6 connectivity by default but do *not* have reverse DNS by
default, it may be worth checking your setup.
** end quote [Andy Smith]
Yes the are, I've had bounces from them with my Entanet IPv6 addresses with the
following text:
(generated from paul(a)aptanet.com)
SMTP error from remote mail server after end of data:
host
gmail-smtp-in.l.google.com [2a00:1450:400c:c05::1b]:
550-5.7.1 [2001:4d48:ad52:3a00::202 16] The sender does not meet basic ipv6
550-5.7.1 sending guidelines of authentication and rdns resolution of sending
550-5.7.1 ip. Please review
550 5.7.1
https://support.google.com/mail/answer/81126for more information.
pn8si4926000wjb.5 - gsmtp
They could do with getting their link right (i.e. a space between the 6 and the
f)! This also impacts email to
ntlworld.com email addresses, and after putting
things together I suspect they may have been silently dropping emails on
occaisions for some time (given emails to both
gmail.com and
ntlworld.com
domains that I've had no way to trace why they never arrived going back to
earlier this year).
I'm investigating at the moment as I would prefer not to have to switch off
IPv6 to get mail working - it seems a backward step! Any useful references or
comments welcome.
--
Paul Tansom | Aptanet Ltd. |
http://www.aptanet.com/ | 023 9238 0001
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