[jQuery] [validate] email validation problem

[emeade]

I am trying to validate emails in the format n...@chs.k12.oh.us. This
format fails using the email method of the validate plugin. It appears
to fail on the length because n...@chs.k.oh.us works but
n...@chs.ka.oh.us does not (basically anything longer than one
character fails). I'm using this on a site for schools so there will
be lots of emails in this format. I am terrible with RegEx so any help
would be greatly appreciated.