Why My VPS sends me tons of emails all the time?

alidata

I am using Aapanel on a VPS:
CentOS Stream 8 | NGINX 1.24.0 | Mail Server 5.4.5 | Redis 7.2.4
After I updated to aapanel v.7.0.11 a few weeks ago, I am receiving tons of emails all the time on the email account I use on the VPS (my_email@gmail.com).

I have tried disabling Dovecot, Rspamd, and Postfix for 1 day, but when I re-enable those services, the VPS sends even more emails.

1. Is there something wrong with some configuration?
2. What should I do, to fix this problem?

Here is a screenshot of my gmail inbox.

aaPanel_Kern

Hello, this is the email of the system root user. What did you configure? Generally, it will not be sent to gmail. Try to create a root user in the mail server.

alidata