Hi!
In preparation for the World IPv6 Launch, inbound (SMTP) email to the
comcast.net domain was IPv6-enabled today, June 5, 2012, at 9:34 UTC.
Roughly one minute later, at 9:35:30 UTC we received our first
inbound email over IPv6 from 2001:4ba0:fff4:1c::2. That first bit of mail
was spam, and was caught by our Cloudmark messaging anti-abuse platform
(the sender attempted a range of standard spam tactics in subsequent
connections).
In the past several hours we have of course seen other messages from a
range of hosts, many of which were legitimate email so it wasn't just
spam! ;-)
Since the Internet is of course more than just the web, we encourage
others to start making non-HTTP services available via IPv6 as well.
Looking more closely... Is this still work in progress?
;; ANSWER SECTION:
comcast.net. 358 IN MX 5 mx3.comcast.net.
comcast.net. 358 IN MX 10 mx1.comcast.net.
comcast.net. 358 IN MX 5 mx2.comcast.net.
;; ADDITIONAL SECTION:
mx2.comcast.net. 6958 IN A 76.96.30.116
mx3.comcast.net. 358 IN A 68.87.26.147
mx1.comcast.net. 358 IN AAAA 2001:558:fe14:70::22
You are now only accepting IPv6 if all IPv4 fails?
Or will AAAA records for mx2 and mx3 added later?
Bye,
Raymond.
