aaPanel_Kern aaP_shohan Hello, try to download this file, and then overwrite it under /www/server/panel/plugin/mail_sys, and then check whether it is normal? https://drive.google.com/file/d/15svCXApdwV8bawMj6C0b4fzzjGQv2_RP/view?usp=sharing If not normal, please try to reinstall the mail server