Contractor filed a mecahnics lien against my property, but I never received a copy of thr lien by certified mail, so the contractor never got my signature thatI received the copy of the lien by certified mail. But the contractor says it didn't matter that I didn't receive it because he has proof he sent it. Doesn't that negate the obvious reason that it is required to send a copy by certified mail so that the homeowner is supposed to receive it?