/home/cpanrun/build/5.6.1/bin/perl Build.PL 
Checking whether your kit is complete...
ERROR: perl: Version 5.006001 is installed, but we need version >= 5.008
ERROR: Encode: Prerequisite Encode isn't installed
WARNING: Net::Address::IPv4::Local: Prerequisite Net::Address::IPv4::Local isn't installed
WARNING: Net::RBLClient: Prerequisite Net::RBLClient isn't installed
WARNING: Net::DNS: Prerequisite Net::DNS isn't installed
WARNING: MIME::Tools: Prerequisite MIME::Tools isn't installed
WARNING: Mail::SPF::Query: Prerequisite Mail::SPF::Query isn't installed
WARNING: ClamAV::Client: Prerequisite ClamAV::Client isn't installed
WARNING: Mail::SpamAssassin: Prerequisite Mail::SpamAssassin isn't installed
ERRORS/WARNINGS FOUND IN PREREQUISITES.  You may wish to install the versions
 of the modules indicated above before proceeding with this installation.

Looks good
Creating new 'Build' script for 'Courier-Filter' version '0.17'
/home/cpanrun/build/5.6.1/bin/perl Build
lib/Courier/Filter/Module/DNSBL.pm -> blib/lib/Courier/Filter/Module/DNSBL.pm
lib/Courier/Filter/Module/MIMEParts.pm -> blib/lib/Courier/Filter/Module/MIMEParts.pm
lib/Courier/Filter/Module/Header.pm -> blib/lib/Courier/Filter/Module/Header.pm
lib/Courier/Filter/Logger.pm -> blib/lib/Courier/Filter/Logger.pm
lib/Courier/Config.pm -> blib/lib/Courier/Config.pm
lib/Courier/Filter/Module/SpamAssassin.pm -> blib/lib/Courier/Filter/Module/SpamAssassin.pm
lib/Courier/Error.pm -> blib/lib/Courier/Error.pm
lib/Courier/Filter/Logger/File.pm -> blib/lib/Courier/Filter/Logger/File.pm
lib/Courier/Filter/Logger/Syslog.pm -> blib/lib/Courier/Filter/Logger/Syslog.pm
lib/Courier/Filter/Module.pm -> blib/lib/Courier/Filter/Module.pm
lib/Courier/Filter/Module/SPF.pm -> blib/lib/Courier/Filter/Module/SPF.pm
lib/Courier/Message.pm -> blib/lib/Courier/Message.pm
lib/Courier/Filter/Module/SPFout.pm -> blib/lib/Courier/Filter/Module/SPFout.pm
lib/Courier/Filter.pm -> blib/lib/Courier/Filter.pm
lib/Courier/Filter/Module/Parts.pm -> blib/lib/Courier/Filter/Module/Parts.pm
lib/Courier/Filter/Module/ClamAVd.pm -> blib/lib/Courier/Filter/Module/ClamAVd.pm
lib/Courier/Filter/Logger/IOHandle.pm -> blib/lib/Courier/Filter/Logger/IOHandle.pm
lib/Courier/Filter/Module/Envelope.pm -> blib/lib/Courier/Filter/Module/Envelope.pm
lib/Courier/Filter/Overview.pod -> blib/lib/Courier/Filter/Overview.pod
bin/test-filter-module -> blib/script/test-filter-module
Manifying blib/script/test-filter-module -> blib/bindoc/test-filter-module.1
Manifying blib/lib/Courier/Filter/Module/Header.pm -> blib/libdoc/Courier::Filter::Module::Header.3
Manifying blib/lib/Courier/Config.pm -> blib/libdoc/Courier::Config.3
Manifying blib/lib/Courier/Filter/Module/Parts.pm -> blib/libdoc/Courier::Filter::Module::Parts.3
Manifying blib/lib/Courier/Filter/Overview.pod -> blib/libdoc/Courier::Filter::Overview.3
Manifying blib/lib/Courier/Message.pm -> blib/libdoc/Courier::Message.3
Manifying blib/lib/Courier/Filter/Module/ClamAVd.pm -> blib/libdoc/Courier::Filter::Module::ClamAVd.3
Manifying blib/lib/Courier/Filter/Module/SpamAssassin.pm -> blib/libdoc/Courier::Filter::Module::SpamAssassin.3
Manifying blib/lib/Courier/Filter/Logger/File.pm -> blib/libdoc/Courier::Filter::Logger::File.3
Manifying blib/lib/Courier/Filter/Module/DNSBL.pm -> blib/libdoc/Courier::Filter::Module::DNSBL.3
Manifying blib/lib/Courier/Filter/Module/SPFout.pm -> blib/libdoc/Courier::Filter::Module::SPFout.3
Manifying blib/lib/Courier/Filter/Module/MIMEParts.pm -> blib/libdoc/Courier::Filter::Module::MIMEParts.3
Manifying blib/lib/Courier/Filter/Logger/Syslog.pm -> blib/libdoc/Courier::Filter::Logger::Syslog.3
Manifying blib/lib/Courier/Filter/Logger.pm -> blib/libdoc/Courier::Filter::Logger.3
Manifying blib/lib/Courier/Filter.pm -> blib/libdoc/Courier::Filter.3
Manifying blib/lib/Courier/Filter/Module/Envelope.pm -> blib/libdoc/Courier::Filter::Module::Envelope.3
Manifying blib/lib/Courier/Filter/Logger/IOHandle.pm -> blib/libdoc/Courier::Filter::Logger::IOHandle.3
Manifying blib/lib/Courier/Error.pm -> blib/libdoc/Courier::Error.3
Manifying blib/lib/Courier/Filter/Module/SPF.pm -> blib/libdoc/Courier::Filter::Module::SPF.3
Manifying blib/lib/Courier/Filter/Module.pm -> blib/libdoc/Courier::Filter::Module.3
/home/cpanrun/build/5.6.1/bin/perl Build test
No tests defined.
/home/cpanrun/build/5.6.1/bin/perl Build install
mkdir /usr/share/courier-filter-perl: Permission denied at /home/cpanrun/build/5.6.1/lib/5.6.1/ExtUtils/Install.pm line 81
make: *** [install] Error 255