#test_mail.pl

use Net::SMTP;

$smtp = Net::SMTP->new(
        Host => '192.168.55.173',
        Debug => 1,
        );
$smtp -> mail("root\@test-server.my.home");
@good = $smtp -> recipient('good_address@my.home','bad_address@my.home
+',{ SkipBad => 1, Notify => ['FAILURE']});
$smtp -> data();
$smtp -> datasend("TO: good_address@my.home\n");
$smtp -> datasend("TO: bad_address@my.home\n");
$smtp -> datasend("SUBJECT: Test e-mail from root\n");
$smtp -> datasend("\n");
$smtp -> datasend("A test message.\n");
$smtp -> dataend();

print "These addresses went: @good\n";
$smtp -> quit();
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If you used strict or warnings, Perl would tell you what goes wrong.