Our first inbound email via IPv6 (was spam!)
Jason_Livingood at cable.comcast.com
Tue Jun 5 14:10:39 UTC 2012
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
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
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.
More information about the NANOG