Don't append a trailing dot to any DNS names. If you know what you're
doing, this can be used to check relative results. Otherwise, it will
probably just lead to false positives.
-.SH EXAMPLES
-
.IP \fB\-\-server\fR,\ \fB-s\fR
Use the given DNS server rather than the resolvers listed in
/etc/resolv.conf. Either an IP address or a hostname will work.
.nf
.I $ haeredes a.iana-servers.net b.iana-servers.net <<< \(dqexample.com\(dq
.fi
+
+.IP \[bu] 2
+If you use \-\-no\-append\-root and your nameservers are rooted, you
+must remember to supply the trailing dot yourself. Otherwise, you'll
+get false positives.
+
+.nf
+.I $ haeredes \-\-no\-append\-root \\\\
+.I " a.iana-servers.net b.iana-servers.net" \\\\
+.I " <<< \(dqexample.com\(dq"
+Domain \(dqexample.com\(dq delegates somewhere else:
+\(dqb.iana-servers.net.\(dq \(dqa.iana-servers.net.\(dq
+.fi
.IP \[bu]
Check orlitzky.com against the expected name servers, using
a root nameserver (this checks the registrar configuration):