perl  -MCPAN -e 'install Net::SMTP'

##</code><code>##

perl -MCPAN -e 'shell'
cpan[1]> ls gbarr  (Net::SMTP was not in his list…Net::TFTP, Net::SNPP and Net::PH were listed)
cpan[3]> ls shay (Net::SMTP was not in his list, nothing with Net was listed)

##</code><code>##

cpan[10]> m Net::SMTP
No objects of type Module found for argument Net::SMTP

##</code><code>##

cpan[11]> m NET::SMTP
No objects of type Module found for argument NET::SMTP