Problem with Task Send Email

Hello, I am having a problem with the scheduled tasks, specifically with the sending of mail, by pressing run now if the shipment works but the task does not run alone and change the domain in me in the store section but it does not work either
Name Store: Distribuidora nacer
URL Store: http://distribuidoranacer.com.ar/
SSL active : NO

Try using www.distribuidoranacer.com.ar and distribuidoranacer.com.ar yet it doesn't work

Thank you.

Check the System > Log for errors.

See if this helps  https://www.nopcommerce.com/boards/t/51010/nop-40-send-email-task-doesnt-work.aspx?p=2#227117

Thank you very much for your response, in that link the solution is to check SSL, but the website does not have SSL certificate, I would like it to work without SSL

Did you Check the System > Log for errors?

Yes, in the log show

System.Net.WebException: No se puede establecer una conexión ya que el equipo de destino denegó expresamente dicha conexión No se puede establecer una conexión ya que el equipo de destino denegó expresamente dicha conexión ---> System.Net.Http.HttpRequestException: No se puede establecer una conexión ya que el equipo de destino denegó expresamente dicha conexión ---> System.Net.Sockets.SocketException: No se puede establecer una conexión ya que el equipo de destino denegó expresamente dicha conexión
   at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
   at System.Threading.Tasks.ValueTask`1.get_Result()
   at System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Threading.Tasks.ValueTask`1.get_Result()
   at System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask`1 creationTask)
   at System.Threading.Tasks.ValueTask`1.get_Result()
   at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken)
   at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
   at System.Net.HttpWebRequest.SendRequest()
   at System.Net.HttpWebRequest.GetResponse()
   --- End of inner exception stack trace ---
   at System.Net.HttpWebRequest.GetResponse()
   at System.Net.WebClient.GetWebResponse(WebRequest request)
   at System.Net.WebClient.DownloadBits(WebRequest request, Stream writeStream)
   at System.Net.WebClient.UploadBits(WebRequest request, Stream readStream, Byte[] buffer, Int32 chunkSize, Byte[] header, Byte[] footer)
   at System.Net.WebClient.UploadValues(Uri address, String method, NameValueCollection data)
   at Nop.Services.Tasks.TaskThread.Run() in C:\Project\ECommerceTFS\VersionPro\src\Libraries\Nop.Services\Tasks\TaskThread.cs:line 65

RE:  System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond

see if this helps
https://www.nopcommerce.com/boards/t/51940/scheduled-tasks-not-working-after-upgrade-to-40.aspx

Thank you for your collaboration, but do everything you said and still not working. Anything else I should check?