What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
This is because your email address is in our bounce list, this is the reason:
smtp; 554-perfora.net (mxeueus004) Nemesis ESMTP Service not available
I have removed it and you should receive your email notification as normal again.
Please, follow this guide in order to prevent bouncing: http://www.jotform.com/help/208-How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues.
This guide will help you to check and remove your email address from our bounce list: http://www.jotform.com/help/262-How-to-remove-your-email-address-from-bounce-list.
If the issue still persists ask your email provider to whitelist our JotMail IP addresses, you will find them on this link: http://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses.
Do note that this will work only if you are using our default sender email addresses.