We stop receiving jotform emails from our form

Having the same issues again. Without warning, we stop receiving jotform emails from our “contact us” form.
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Your form submissions have failed since June 5th. The emails are sent from a different custom sender email address. I've checked your form and couldn't find these custom sender emails anymore so I think you've removed them already. 

Custom Sender Email will likely to fail especially for free addresses such as Gmail, Yahoo, and Hotmail. This is because of the changes in their DMARC policy. 

https://dmarc.org/ 

If you want to use a custom sender email, please do so my SMTP instead: https://www.jotform.com/help/244-How-to-Setup-SMTP-for-a-Form. 

If you are still not getting any emails after the changing your sender email to noreply@jotform.com, I would suggest checking the following guide and do our recommendation such as the whitelisting of our IP Addresses and Sending Domains:

https://www.jotform.com/help/208-How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues 

Let us know if you need any further assistance.