$ host -6 -v list.waikato.ac.nz

Trying "list.waikato.ac.nz"

;; connection timed out; no servers could be reached

$ host list.waikato.ac.nz

list.waikato.ac.nz has address 130.217.66.63

list.waikato.ac.nz mail is handled by 400 list.waikato.ac.nz.s200b2.psmtp.com.

list.waikato.ac.nz mail is handled by 100 list.waikato.ac.nz.s200a1.psmtp.com.

list.waikato.ac.nz mail is handled by 200 list.waikato.ac.nz.s200a2.psmtp.com.

list.waikato.ac.nz mail is handled by 300 list.waikato.ac.nz.s200b1.psmtp.com.

-- 
Juha Saarinen
twitter: juhasaarinen