Error On Connection - SASL authentication

Hello everyone,

I'm new with all of XMPP environment.

I'm using c# .Net to connect to my XMPP server.

i created a new test user called "eli101" in openfire user.

I did not gave openfire a host name and i connect with his ip address

In .Net i'm using the S22.Xmpp extension from NuGet.

My App Server is windows and my openfire server is linux

this is my code :

     string host = My Host Ip;                           //No Host Name

     string username= "eli101@il3lv6809" ;     //As it is written in "xmpp.domain"

     string password ="12345";

     bool ssl = "true";                                        //I also try it with false

            XmppClient client = new XmppClient(host, username, password, 5222, ssl);

            if (client == null)
            {
                LastException = new Exception("Error 1");
            }
            else
            {
                try
                {
                    client.Connect();
                }
                catch (Exception ex)
                {
                    LastException = ex;
                }
            }

Every attempt I make, I get the same error.

I wiil appreciate any help.