Email Sent But Never Receive to Destination

I have a problem, email can already be sent to the destination email, but the email doesn’t arrive.

But can receive an email.

What’s the solution?

share email logs please


Port 25 blocked by provider (VULTR). So, i use SMTP from Sendinblue.

Refference : Fix Email Issues in CyberPanel with SMTP Relay Setup (Free Method) - YouTube

i have vps SG on vultr
all port open…