 Here are some examples of what we would consider good SPF records. So for example, V equals SPF1 include SPF.protection.outlook.com-all. That's the simplest SPF record that you could have if you're on Office 365. And a lot of people when they're on Office 365, that gets set up just as part of them moving to an Office 365 tenant. You can see we've included a couple of more complicated ones here where we've got includes that not only include Office 365, but also include other things like constant contact and SMTP to go. So these are examples of different ways to add those includes.