I am running postfix on debian wheezy with Dovecot and I had spam issues with a php script . after finding and removing the script I am unable to send any mails from squirrel mail from my browser. I get
ERROR: Message not sent. Server replied: Service not available, closing channel 421 4.3.2 All server ports are busy
How can i track this issue down and What information should I provide to resolve this issue?