ipv6 native smtp server / mailing list

[leenoux]

good day IPv6 evangelists 

Is there any ipv6 enabled mailing list or smtp tester that i can use for testing my ipv6 smtp server availability/reachability?
yes, i've passed he.net certification that covered smtp test.but still, i'm not yet in confidence, before i have real traffic from smtp/mailing list running on ipv6 natively 

any thoughtful comment/guidance would be appreciated.

sorry for my ungrammatical/bad english 

thanks

[leenoux]

i've found it

https://lists.isc.org/mailman/listinfo

# dig mx lists.isc.org +short
10 mx.isc.org.
15 mx.ams1.isc.org.
# dig aaaa mx.isc.org +short
2001:4f8:0:2::1c

and these

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/eresources.html#ERESOURCES-MAIL
http://lists.debian.org/completeindex.html
http://www.linux-ipv6.org/ml/index.html#usagi-users

sorry for the noise

thanks