Hubspot Form Submission Notifcation Emails not being received

As emails do not go through websites, they go through email servers, and this email is going to microsoft outlook servers through DNS redirect… I’m not sure why this would be an appropriate response.
Why would I need a tracking code on the website?
For context, I’m using the Hubspot for WordPress plugin, and have the forms embedded using the shortcode from the plugin.
Wehn the form is submitted, it does generate the opportunity in the Hubspot CRM, but the email notification doesn;t go through.