Custom Error Files

["Kevin Gordon" <kevin.gordon@xxxxxxxxx>]

Hey,
Quick Question. I noticed in the custom error section of the FAQ it
mentioned being able to use %m to print error messages returned by a
custom authentication helper. My question is, how do I return an
error, other then ERR from my auth helper.

I am coding in perl so my snippet of code is


#!/usr/bin/perl
$|=1;

while($userinfo = <STDIN>) {
   ...
   if($allowed) {
           print "OK\n";
   }
   else {
           print "ERR\n";
}


I have tried printing "ERR CUSTOM_ERROR\n", "ERR:CUSTOM_ERROR\n" and
"ERR\nCUSTOM ERROR\n";

Any suggestions on how to return an error message to be used in the error file?