Why is my email address in the bounce list?

Good Afternoon-

 I keep getting a message stating that my email is on the

I keep getting a message stating that my email is on the "bounce" list.  I double checked and it is correct, Colleague.traveldiscounts@cooptravel.coop.  Please help.

I have just checked the email address you have used in your account and it seems to be in our bounce list due to the following reason: 

Reason(s) : smtp; 451 Temporary local problem - please try later

I already removed the email address from our bounce list, please note that this may happen due to several reasons, but here are some recommendations that will help you avoiding bouncing issues: https://www.jotform.com/help/208-How-to-Prevent-Email-Bouncing-Related-Issues 

You could also check and remove an email address from our bounce list, here is a guide that will help you with that: https://www.jotform.com/help/262-How-to-Remove-Your-Email-Address-from-Bounce-List 

I hope this helps.