As far as rules for Defiance go, they are exactly the same as regular Oblivion(as can be found here:shard-rules)
The Land is divided as best as can be done for story purposes… so venturing beyond the imposed limited areas could be considered violating Rule #2:
2. Staff has the final say - If a staff member requests that you refrain from doing something that is not explicitly outlined on this page do it. Only Shard Admin may overrule a Staff decision. If you feel you must contact an Admin regarding an issue do so via email. Oblivion shard Admin email is moc.liamtoh|drahsnoivilbo#moc.liamtoh|drahsnoivilbo.