[CentOS] Perl516 SCL modules

Hi,

I'm trying to build several SCL perl516 modules for using assp spamfilter.
Some modules have dependencies which spend a lot of errors or can not be 
build on a x86_64 system.
perl-Email-Valid-0.184 for example needs Win32::IPHelper and 
Win32::TieRegistry.
If I build this rpm for standard perl510, the Win32 modules are not 
required.
Why are theses dependencies only for perl516?
Can I exclude the Win32 modules without getting problems?

Does anyone have a few tips?

Thanks in advance!

Kind regards,
Nicole