Why is my email added to bounce list always?

How do I keep getting in the bounce email situation? Is it because it's aol?

Generally, the email addresses are added to the bounce list if the emails sent are repeatedly failing to deliver to the address. This may be also possible due to the strict DMARC policy of AOL. Please refer to the blog post below from AOL about their DMARC policy.

http://postmaster-blog.aol.com/2014/04/22/aol-mail-updates-dmarc-policy-to-reject/

If your email address is continuously added to the bounce list, you may consider setting up SMTP email address to send the notifications/auto-responders. Also, please check the following guide that can help you with troubleshooting email delivery issues.

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

Hope this information helps!