Dome Question

[atul]

One question regarding domes sprang up on me in an ongoing MP just recently. Namely, what spells ignore domes?

I've noticed before that sitesearching spells aren't blocked by domes. Now it seems to me that Astral Window flies past them also. Either that or I've been terribly unlucky as I've thrown several Windows on a province and none have been blocked even when (as I've now been told) the province in question has been well domed.

Anyone care to verify this or tell me I'm totally wrong? And can anyone tell which spells are blocked and which aren't? It'd seem the distinction between "offensive spell" and other spells is different from what I've thought if scrying can get through.