following provisions:
<DL>
<DT>REMOTE_HOST
-<DD>This will only be set if the server has not been compiled with
-<CODE>MINIMAL_DNS</CODE>.
+<DD>This will only be set if <A HREF="core.html#hostnamelookups"><CODE>HostnameLookups</CODE></A>
+is set to <CODE>on</CODE> (it is off by default), and if a reverse DNS
+lookup of the accessing host's address indeed finds a host name.
<DT>REMOTE_IDENT
<DD>This will only be set if
-<A HREF="core.html#identitycheck">IdentityCheck</A> is set to <CODE>on</CODE>.
+<A HREF="core.html#identitycheck">IdentityCheck</A> is set to <CODE>on</CODE>
+and the accessing host supports the ident protocol. Note that the contents
+of this variable cannot be relied upon because it can easily be faked, and if
+there is a proxy between the client and the server, it is usually
+totally useless.
<DT>REMOTE_USER
<DD>This will only be set if the CGI script is subject to authentication.
</DL>