FreeBSD Port: openwebmail-2.50

[Bozhan Bozhkov]

Hi
I'm traing to migrate a mail server from slackware to freeBSD.
When I try to install the openwebmail-2.50 port
I receive 

===>  Installing for openwebmail-2.50
===>   openwebmail-2.50 depends on 
file: /usr/local/lib/perl5/site_perl/5.8.5/mach/Text/Iconv.pm - not found
===>    Verifying install 
for /usr/local/lib/perl5/site_perl/5.8.5/mach/Text/Iconv.pm 
in /usr/ports/converters/p5-Text-Iconv
===>   Returning to build of openwebmail-2.50
===>   openwebmail-2.50 depends on 
file: /usr/local/lib/perl5/site_perl/5.8.5/mach/MIME/Base64.pm - not found
===>    Verifying install 
for /usr/local/lib/perl5/site_perl/5.8.5/mach/MIME/Base64.pm 
in /usr/ports/converters/p5-MIME-Base64
===>   Returning to build of openwebmail-2.50
===>   openwebmail-2.50 depends on file: /usr/local/sbin/lsof - found
===>   openwebmail-2.50 depends on file: /usr/local/bin/perl5.8.5 - found
-u: not found
*** Error code 127

Probbabli this is a  trivial question, but I use freeBSD from a short time and 
I am confused from this error. Googling did not help too.
So what is wrong?

Regards
Bozho