pmail.com uses stealth SOA and under normal circumstances looks like this:
pmail.com
primary name server = parnassus.pmail.gen.nz
responsible mail addr = postmaster.pmail.com
serial = 2008042000
refresh = 3600 (1 hour)
retry = 1800 (30 mins)
expire = 604800 (7 days)
default TTL = 600 (10 mins)
pmail.com nameserver = ns1.hdl.com
pmail.com nameserver = ns2.hdl.com
You should try in the following order: ns1.hdl.com (67.99.228.250), then ns2.hdl.com (67.99.228.249), then lastly parnassus.pmail.gen.nz (192.156.225.2)(
Kind regards / Peter