Can receive email but not send

Hello,

I have setup AWS instance with cyberpanel. After creating email at cyberpanel,

I can receive email but not send it.

If I use gmail to send email , I will get that email into my cyberpanel webmail.
but if I try to send/reply. That email will show send from webmail but will not be sent to that gmail account."

Here is a ss for my DNS: https://i.imgur.com/cYTWxb9.png

Thanks !