my $email_raw = Email::Simple->create(
        header => [
                From    => "somebody@somewhere.org",
                To      => "someone@somewhere.org",
                Subject => "test message"
        ],
        body => "contents",
);

my $sender = Email::Send->new({mailer => 'SMTP'});
$sender->mailer_args([Host => "smtp.working.one"]);
$sender->send($email_raw);

##</code><code>##

May  9 12:37:11 hostname postfix/smtpd[9395]: timeout after END-OF-MESSAGE from hostname[127.0.1.1]
May  9 12:37:11 hostname postfix/smtpd[9395]: disconnect from hostname[127.0.1.1]