Infiniti2000 said:Sure. But keep in mind my response was predicated on the clause from Pinotage, "If it's spell damage...."
I agree with Hyp that the real question is defining spell damage and you mention the main concerns in that regard.
Your #3 is a little lacking IMO because it would mean that a fireball does not deal spell damage. I can't think of a use for that off hand, but there might be other spells out there which could be more easily exploited. The fact is that we must all agree that a fireball is spell damage.
No, a fireball is fire damage.

Infiniti2000 said:Perhaps you should amend it by saying that any spell that deals bludgeoning, piercing, or slashing damage is not considered spell damage for that portion unless the spell description explicitly says so. Thus, ice storm deals 3d6 bludgeoning non-spell damage and 2d6 cold spell damage.
I should amend it to say "unnamed damage caused by a spell is spell damage".
Infiniti2000 said:That then only leaves the problem of having SR and DR/not bludgeoning. If your SR works, you take no damage, but if your SR doesn't work, your DR applies. Does this mean magical damage need not be spell damage? I think that's somewhat of an inconsistency.
I do not understand your question here.