You can get ppm packlages for IO::Socket::SSL and Net::SSLeay from the sisyphusion repo. Net::SMTP::SSL is pure perl (but I'll stick a ppm package on the sisyphusion repo anyway), and I couldn't quickly find Net::POP3::SSL on CPAN. Did you mean Net::POP3::SSLWrapper ? (If so, it also is pure perl, but could also be added to the sisyphusion repo.)
Update: Added Net::SMTP::SSL and Net::POP3::SSLWrapper to sisyphusion repo.