Today is world IPv6 launch day. A group of ISPs, network hardware manufacturers and web companies permanently enabled IPv6 for their products and services.
What’s this got to do with email? According to a post on the NANOG mailing list the very first email to arrive at the Comcast IPv6 mailserver was received a minute after the server was turned on. This email was spam and was caught by Cloudmark’s filters.
Comcast goes on to assure readers that more mail came in and not all of it was spam.
But, yes, the first email sent to Comcast over IPv6 was spam. Welcome to the future.