AMAZON SES

Hi good day! I am currently using a translator. I want to request your help, I am starting to mount a cpanel on a VPS server, I am learning from scratch and I am mounting it on Amazon AWS. In Amazon AWS port 25 SMTP is blocked so I am trying to implement Amazon SES, where they ask me to tell them how I will use the mail and how I will handle bounces and complaints, but I do not understand what it refers to, could you help me to How does webmail handle what AWS requests? This is the text they write to me: "You indicated that you do not have a process in place to handle bounces and complaints" They can help me with a text to be able to request and explain to AWS. and thus be able to continue learning cpanel and VPS regards