IANA-registered to Tobit David's Postman messaging component; almost never seen outside German SMB networks.
IANA assigns 1049 to "td-postman — Tobit David Postman VPMN", a component of Tobit Software's David groupware suite, a German unified-messaging product that combines email, fax and telephony for small and mid-size businesses. The registration dates from the era when David was widely deployed in German-speaking Europe; outside that market you will effectively never meet the real service. Nmap's frequency data puts 1049 at roughly 0.2% of scanned hosts, and a listener you find there is far more likely to be an unrelated application that grabbed a free port above 1024 than a Tobit server. Identify it by its banner before assuming the registration is what you are talking to.
Expose with care
A proprietary LAN messaging component with no public security track record — keep it on the internal network, and if you find something listening here, fingerprint it before deciding anything.
$ nmap -Pn -sV -p 1049 TARGETSeen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
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