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.
Your autoresponders has failed most probably due to your SMTP setup base on the email logs result. You are using SMTP sender email on your form notifications and autoresponders, this means all emails that will be sent will use your sending server. When SMTP credentials are not valid, notifications and autoresponders will definitely fails.
If you want more reliable emails, you can use the noreply email without Jotform branding provided on the sender emails list.
If you have more questions, feel free to let us know. We'd be happy to help.