{
    $OUT = '';

    use esmith::DomainsDB;
    my $domainsdb = esmith::DomainsDB->open_ro();

    for my $domain ($domainsdb->domains)
    {
        my $mail_server = $domain->prop('MailServer')
                          || $DelegateMailServer
                          || 'localhost';

        next if ( $mail_server ne 'localhost' );

	$emaildomain = $domain->key;
	my $handler = $domain->prop('EmailTo') || "alias-localdelivery";
	$OUT .= "$emaildomain:$handler\n";
    }
}