1038

TCP port 1038 is assigned to MTQP (Message Tracking Query Protocol), which queries the status of messages transmitted via SMTP. RFC 3887 specifies an MTQP server listening on this port. The evidence does not establish whether any host currently runs the service or whether it should be publicly reachable, so the recommended exposure is Unknown.

MTQP clients connect to a server identified through DNS SRV lookup using _mtqp._tcp, then exchange commands and responses. A TRACK request retrieves message-tracking information after user validation. RFC 3887 also specifies TLS support, though it says administrators may disable TLS.

Because tracking queries can expose message routing status, operators should limit access to intended clients and protect sessions according to their security requirements. This is a protocol-based consideration, not evidence that a particular host is exposed or unsafe.

Service

MTQP (Message Tracking Query Protocol) is assigned to TCP port 1038. [Confirmed]

Exposure

Unknown; registry and protocol specifications do not establish the intended public access policy for a deployment. [Unknown]

Security

Tracking queries retrieve message status after user validation; RFC 3887 specifies TLS support, which administrators may disable. [Confirmed]

Service

MTQP (Message Tracking Query Protocol) [Confirmed] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv

Protocol

MTQP queries status information for messages transmitted via SMTP

Exposure policy

Unknown; supplied sources do not establish a recommended public access policy for a deployment

Listener

MTQP server initially listens on TCP port 1038 [Confirmed] — https://www.rfc-editor.org/rfc/rfc3887.txt