Expected response code "250" but got code "421", with message "421 too many messages in this connection".

I developed a website intended for sending promotional bulk emails. It's hosted on GoDaddy servers. I experimented with various email delivery methods like Gmail SMTP, webmail, and Outlook. However, I encountered an issue after sending just 10 emails. The error message displayed was: "Expected response code '250' but received code '421', with the message '421 too many messages in this connection" this is my code

public function promotionMail(Request $request){

    $enquiries = DB::table('emails')->get();
   
   
    /*$enquiries = Registermail::where('is_active',1)->get();*/
 
    // Retrieve recipient emails or other necessary data
    $recipients =  $enquiries->pluck('email');// Example recipients
    $input=$request->all();
    // Dispatch job to send emails
     ini_set('max_execution_time', 4500);
    
    dispatch(new SendBulkEmails($recipients,$input));

    // Optionally, return a response or redirect
    return redirect()->back()->with('success', 'Bulk emails are being sent.');
}

how to solve this if anyone have any idea please share.