Does Marketo prevent hard bounces from being included in campaigns?

[Anonymous]

I've had many bounces and it seems like Marketo continues to send emails to contacts that have hard bounced.

[Anonymous]

Once any Marketo email sent hard bounces Marketo get a notification back and it automatically updates the field "email invalid" to "True" Program members with is value are always blocked from all future "non-opperational" campaigns.

[Anonymous]

It should also block if they are in a flow of 10 emails and the first one bounces. However soft bounces can have a temporary block.