Any change / update?  I've exhausted the XMPP clients available from Google Store and none will connect properly.  I can see the connection attempts in the log but 5:39:55 CLIENT FAILED TO CONNECT: con_4923 is common failure.

 

13.3

 

What is everyone using for desktop client? I haven't found anything as good as Pandion and it is buggy and no longer under active development now.

Dan, many of us use Pidgin. PSI is another good alternative that I have used in the past.

I can't add comment, so I'll add as reply

 

12:08:13 RECV: <stream:stream to="hummelsop.com" xmlns="jabber:client" xmlns:stream="http://etherx.jabber.org/streams" version="1.0">
12:08:13 SENT: <?xml version='1.0'?><stream:stream from='hummelsop.com' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' xml:lang='en' id='xmpp_854993' version='1.0'>
12:08:13 SENT: <stream:features><auth xmlns='http://jabber.org/features/iq-auth'/><starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>DIGEST-MD5</mechanism><mechanism>PLAIN</mechanism></mechanisms></stream:features>
12:08:13 RECV: <starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls"/>
12:08:13 SENT: <proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>
12:08:13 [208.105.243.202][46381189] Exception negotiating SSL certificate: System.NullReferenceException: Object reference not set to an instance of an object.
   at MailService.TcpServerLib.Common.PooledTcpItem.ConvertToSSL(IPBindingPort setting, Log log, String sessionId)
   at MailService.TcpServerLib.XMPP.XMPPServer.#M5(Socket , PooledTcpItem , IPBindingPort , String )
12:08:13 ERROR: System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.Sockets.Socket'.
   at System.Net.Sockets.Socket.get_LocalEndPoint()
   at MailService.TcpServerLib.XMPP.XMPPServer.OnSSLConnection(XmppServerConnectionBase con, String sessId)
   at XMPP.OnSSLConnection.Invoke(XmppServerConnectionBase con, String sessId)
   at XMPP.XmppServerConnectionBase.streamParser_OnStreamElement(Object sender, Node e)
12:08:13 ERROR: System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Net.Sockets.Socket'.
   at System.Net.Sockets.Socket.BeginReceive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, SocketError& errorCode, AsyncCallback callback, Object state)
   at System.Net.Sockets.Socket.BeginReceive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, AsyncCallback callback, Object state)
   at XMPP.XmppSocketConnection.ReadCallback(IAsyncResult ar)
12:08:13 CLIENT FAILED TO CONNECT: con_7128

Mark, what client are you using. I will try and replicate your problem.