laundo — 2012-12-22T01:56:13-05:00 — #1
ralphm — 2012-12-22T03:01:47-05:00 — #2
You'd be better off doing this with PHP or other server side lingo. Presumably there is one already to process the form? In that case, you just add a regex rule that only accepts .edu in the email address.
laundo — 2012-12-23T10:41:02-05:00 — #3