sub socket {
use IO::Socket;
$socket = IO::Socket::INET->new(PeerHost => 'Inserisci server', 
                                PeerPort => 25,
                                Proto => 'tcp',
                                Debug => 1) || die "Error: $!\n";
if ($socket) {
	print "Socket ready\n";
	&smtp();
} else {
	print "Error: $!\n";
	}
}

sub smtp{
use Net::SMTP; 

$smtp = Net::SMTP->new('your.mail.server.com', 	
                        Hello => 'quellochevuoi',
                        Timeout => 60) || die "Error: $!\n";

$smtp->auth( 'username', 'pass');   
$smtp->mail('your@email.com');      
print "Insert rcpt:\n";
$rcpt = <STDIN>;      
$smtp->to("$rcpt");
$smtp->data();
print "Insert message: \n";
$message = <STDIN>;                  		
$smtp->datasend("Subject: \n");
$smtp->datasend("Cc: \n");
$smtp->datasend("From: your\@email.com\n");
$smtp->datasend("To: $rcpt\n");
$smtp->datasend("$message");
$smtp->datasend("\n");
$smtp->dataend();
$smtp->quit;
}
&socket();