Type your comment> @usmannasir said:
Use this guide to find root cause of email issues → Troubleshooting CyberPanel - 14 - Logging & Troubleshooting - CyberPanel Community
Also you can use our Cloud Debugger to reset email settings and you also did not follow the bug report template, so we don’t know your provider, os and other details.
Thanks “Cloud Debugger to reset email settings” solved my problem