Are Vampires technically undead? I think to be undead you have to have died and not all vampires actually die they get "turned". Though it depends on the specific setting I guess.

My D:OS Mods:
Dunamis - A 15 hour Adventure Mod for D:OS EE

A Necromancer's Crusade - 10 hour adventure mod for D:OS EE

4 Character Creation (EE)