I don't think you can disable DNS lookups. But I could try adding an option to do that. - Provided I find the time, - I've been a rather busy lately.

P.S.
The banning is a personal argument with one of the mods (who is not actively posting here anymore). I told him I can change my eMail-address & create a new account more quickly than he could ban me, and now he seems to be testing my persistance.