{
    $OUT = "";

    #--------------------------------------------------
    # Now check for SMTP smart host
    #--------------------------------------------------

    if (
        $SMTPSmartHost
        &&
        ($SMTPSmartHost ne 'off')
        &&
        ($SMTPSmartHost !~ /^\s*$/)
    )
    {
        # Is the smtp-auth-proxy enabled?
        if (${'smtp-auth-proxy'}{'status'} eq 'enabled')
        {
            $OUT .= ":localhost:26";
        }
        else
        {
            $OUT .= ":$SMTPSmartHost";
        }
    }

    chomp ($OUT);
}