That's usually a good practice. It depends on the number of people and how engaged they are. Do you really want to ask Sales to call up people who are likely no longer there or perhaps don't want to be called?
Another method I recommend is to go through the Hard Bounced list using a smart list. See if you can spot obvious mispelligns of domains or names. A lead will often type in their email quickly and not realize they transposed letters. Fix that and reset the Email Invalid flag. then you can resend to that person or group.