There is a module which you can send mail with and its realy easy to use. You can find documentation here -> Mail::Sender

#!/usr/bin/perl -w

use strict;
use Mail::Sender;

#create mail and send attached a file if you want
$sender = new Mail::Sender{
               smtp => 'smtp_server_of_your_mail',
               from => 'my_name@whatever.com'
              };
$sender->MailFile({
           to => 'name@whatever.com',
           subject => 'Hello....',
           msg => "The attached file i've been trying to send....hmmm"
+,
           file => 'my_file.foo'
          });
$sender->Close();
[download]

To install it, with ppm just
ppm> install Mail-Sendmail
You can also search for sendmail at cpan or just mail