On 2013-05-30 07:46, Marco d'Itri wrote: > I have noticed in the last few days that mail sent to gmail from a > significant number of our servers (both shared hosting / mail relays and > dedicated servers of our customers) with IPv6 connectivity is delivered > to the spam folder. > If there has been spamming activity (as a result of some security > incident, I am not an ESP) from some of these servers then it is not > recent. > The reputation problem is tied to the IP address, because after adding > a new one in the same /64 mail is delivered to the inbox. > > > (OTOH, recently I have received significant complaints from customers > about gmail rejecting connections or delivering to the spam folder even > long after a security incident, so this may be not specific to IPv6.)
Various people have been reporting related events: http://www.sixxs.net/forum/?msg=general-9241166 Seems something in the Big G classifies IPv6 as 'bad' quite quickly for some magic reason. Greets, Jeroen
