IPv6 smtp spam

[SM]

Hi Tim,
At 07:07 17-04-2008, Tim Chown wrote:
>After the recent discussion on IPv6 smtp...
>
>We've now started recording the volumes of IPv6 mail and spam that
>we're receiving externally on our MXes.

There goes my argument that IPv6 can solve the spam problem. :-)

>Over the past 30 days our netflow data suggested about 1K per day,
>comapred to 500K IPv4 messages.

Can you determine the percentage of spam originating from IPv6 tunnels?

Regards,
-sm