My email keeps getting on the bounce back list

I have contacted you before about my email being on the bounceback list. You asked me to contact you when it happened again. I haven't taken it off yet so that maybe you can see why it keeps getting put back on that list. Any help is appreciated.

I have checked your email address and it has been added to our bounce list due to the following reason:

Reason(s) : smtp; 550 SC-001 (SNT004-MC8F7) Unfortunately

I would suggest you to add the JotForm sender emails to your safe list, this should help to avoid emails being marked as spam or junk and bounce back emails from your forms. 

You could also follow this guide in order to avoid bouncing issues: https://www.jotform.com/help/208-How-to-Prevent-Email-Bouncing-Related-Issues 

Another way to avoid bouncing would be using an SMTP sender, this guide will provide you more details about it and how to set your custom sender: https://www.jotform.com/help/244-How-to-Setup-SMTP-for-a-Form 

Hope this helps.