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?

[email protected]. [email protected]. 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

Answer 1

The email addresses are not "obviously wrong"; a DNS name is allowed to end with a trailing . to indicate that it's absolute rather than relative.

[EDITED to add: The above may be misleading. In an email address, for SMTP at least, hostnames are always interpreted as fully-qualified -- i.e., "absolute". So there's never a need for a trailing . in the hostname part of an email address. However, the trailing . is still valid hostname syntax.]