NETVIGATOR
mail.netvigator.com

BIZ NETVIGATOR
corpmail1.netvigator.com

I-CABLE
smtp.i-cable.com

PACIFIC SUPERNET
pacific.net.hk

HKBN
smtpo.hkbn.net
smtp3.ctimail3.com

HGC
mail.on-nets.com

WTT
smtp2.wtt-mail.com