Is an email address valid that passes validation but bounces?

Question

I use the Zend_Validate_EmailAddress to validate email addresses for my email program. It validates according to the RFC2822 - http://framework.zend.com/manual/en/zend.validate.set.html

My question is are these valid emails when they pass validation?

test@test.co. test@test.co.za. etc Note the full stop at the end.

I find that the validator passes these email addresses which are obviously wrong. I don't fully understand why this should pass can anyone help me?

Regards