iwsend_mail @ TS 5.5.2

System

Has anybody else come to the following:

When using Teamsite 5.5.2 (+ Solaris in our case) , on the workflows we call the $iwhome/bin/iwsend_mail.ipl script to send mails. Well, apparently there was something wrong going on with the e-mails and the external task always got blocked (as when it cannot deliver mail or an error on the command occurs). Well after 2-3 days investigating (perl -d), looking at all possible configurations, I found this on the aforementioned script (line 105 of the script):

# Treat debug_output=yes the same as =true.
if ($hash{um} eq 'yes') { $hash{um} = 'true'; }
die("$0: Required configuration parameter missing.\n",
"\tPlease see documentation.\n")
if (!defined($hash{md})||!defined($hash{ms})||!defined $hash{um})||
(!defined($hash{mf}) && ($hash{um} eq 'true')));

well as you can see, the script would ALWAYS die, no matter which parameters you entered... so as a test I just commented the DIE part, and guess what?? it works now!!
If any of the Teamsite guys is looking at this, could you shed any light on this??? the version string: 5.5.2 Build 10716 SYM Interwoven 20020811