I am facing a Strange Problem with my Implementation .I am using a Control Center with 4 Scanners .One Scanner is not able to submit certain emails from a sender to Control Center Content Quarantine folder .When it tries to send that email on Port 41025 ,it gets this error message "451 4.4.2 [internal] connection closed by remote host " .ON the Control Center side ,I have done the following steps
Restarted MTA and Agent Service ...did not help
Restarted Control Center Service ..did not help
Kindly suggest on what could be the Problem .At the same time ,this Scanner is able to submit all the other emails .