If you run a nessus scan against a Domino HTTP Server you might get the following result:

Scanner host: "nessus"
Imported from: "/opt/nessus/var/nessus/users/nessus.1/reports/xxxxxxxxxxxxxxxxxxxxxx.nessus"
Scan report created: 2012-06-05 22:06:09 Scan report imported: 2012-06-06 06:25:46 Report name: PeriodicScan[xxxxxxxxxxx]:Groupware-Server (scheduled)
Hostname: "Domino1" (xxx.xxx.xxx.xxx)
Plugin name: "HTTP TRACE / TRACK Methods Allowed"
Plugin family: "Web Servers"
Service: "www", Protocol "tcp", Port "80"
Severity: Medium
Risk factor: Medium

Fixing this "issue" (= disable the trace / track method) is quite easy: {readmorelink}[...]{/readmorelink}

Read more: Hardening Domino: Disable Lotus Domino HTTP Trace/Track methods