QMTP Open Relay
High Nessus Plugin ID 38789
SynopsisAn open QMTP relay is running on this port.
DescriptionThe QMTP/QMQP server that is running on this port allows relaying. Make sure it rejects connections from Internet so that it cannot be used use as an open relay. Otherwise, it may be blacklisted by RBLs or overloaded by spam.
SolutionRestrict access to this service or disable it if it is not used.