Link is broken!
Hello!
What are you trying to achieve?
If you are trying to block these emails(Gmail, Hotmail, etc) from entering your lead database with a form fill, this is what you are looking for:
http://developers.marketo.com/blog/restrict-free-email-domains-on-form-fill-out/
Here's an example. It's using a Marketo Landing + Form + Script.
http://go.hosehangerpro.com/restrict_free_email_domains.html
If you are trying to filter the email addresses that are already in your Lead Database, you can do this using a smart campaign - Smart List - Filter
To the degree that a SL filter can help with this (which is limited) it should be:
contains '@gmail.com;@hotmail.com'