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I've fixed it for you. Here are the details of the issue:
email@example.com is IN Remove the bounce list
Reason(s) : smtp; 554 5.7.9 Message not accepted for policy reasons.
Your settings are correct upon checking some of your forms so I think the issue is with your hosting provider. We recommend adding us to your server whitelist settings. Here's our list: https://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses.
Lastly, here's how you can remove your email from the bounce list: https://www.jotform.com/help/262-How-to-remove-your-email-address-from-bounce-list.