Do the armor points contribute towards protection against all races?

[Gabe]

I am wondering if armor points contribute towards protection to all classes, or only against warriors?

I thought it was the stats that contributed towards protections, for example....intelligence against a mage and that's it. Or is do INT and armor both together contribute towards lowering the damage of a mage when I am under attack?

[krhth]

Armor applies to all attacks except the ones from a mage.

[Gabe]

Armor applies to all attacks except the ones from a mage.

Thanks.