Perl使用主机名发邮件

使用别的邮件系统有诸多限制，
不如用linux系统本机的邮件功能; 

#!/usr/bin/perl
##
# Test linux mail
##
use warnings;
use strict;
use Mail::Mailer;
use Socket;

my $mail_subject = "test mail";
my @daily_mail_content = "test is ok!\n";
&mailer_send_mail($mail_subject, \@daily_mail_content);

sub mailer_send_mail {
  my ($subject, $param) = @_;

  my $message = join('',@$param);

  my $host = `hostname`;
  my $mail_host = 'root@'.$host;

  my $from_address = $mail_host;
  my $to_address = '[e-mail]';

  my $mailer = Mail::Mailer->new("sendmail");
  $mailer->open({From      => $from_address,
                              To         => $to_address,
                              Subject => $subject,
                              })
  or die "Can't open : $!\n";
  print $mailer $message;
  $mailer->close();
}