incoming smtp from v6 addresses

Fri Jan 6 19:16:50 UTC 2012

Randy Bush <randy at psg.com> wrote:
> for incoming mail that is *accepted*, i.e. not stuff like
>     2012-01-04 00:37:28 REJECT because 118.39.80.118 listed in rbl-plus.mail-abuse.org
>     2012-01-04 00:37:28 H=(nexo.es) [118.39.80.118] F=<pedrom at nexo.es> rejected RCPT <owner-radiusext at ops.ietf.org>: blocked because 118.39.80.118 is in  blacklist at rbl-plus.mail-abuse.org: Mail from 118.39.80.118 blocked using Trend Micro Email Reputation database. Please see <http://www.mail-abuse.com/cgi-bin/lookup?118.39.80.118>
>     2012-01-04 00:37:28 no host name found for IP address 118.39.80.118
>     2012-01-04 00:37:29 REJECT 118.39.80.118 too many bad recip
>     2012-01-04 00:37:29 REJECT because 118.39.80.118 listed in rbl-plus.mail-abuse.org
>
> 7.8% is over ipv6 transport
>
> but only 2% of outgoing deliveries are over ipv6.
>
> what do other folk see?

Main inbound MX for a large educational institution sees around 5% of
mails coming in via IPv6. Might be a bit biased due to holiday season.

Outbound is mostly running on legacy servers without IPv6, yet :-(

Bernhard