You can disable clamd without disabling your pop3. Clamd is a daemon should be available in the service list. You can simply do the following to find clamd and kill it: Find clamd PID: ps -axww|grep clamd Code (markup): This will generate a few lines regarding the clamd processes. Find the PID listed there for the clamd process(s) And run this command to kill them: kill -9 YourPID Code (markup): Put your PID in the place i said "YourPID". This will eventually terminate your clamd from running. If you have cpanel, you can permanently disable it from your WHM >> Service Manager Good luck