I'm having some problems creating a very simple pop3 client.  The only thing 
this client is supposed to do is poll the pop3 server for new messages.  The 
client will connect (which it does successfully), provide a username via the 
USER command, provide a password via the PASS command, and retrieve 
statistics via the STAT command.

My problem is this: when I try to send the USER command (followed by Chr(13) 
+ Chr(10) for a carriage return/line feed), or any command for that matter, 
the pop3 server returns with "ERR unrecognized command".  I can't find 
anything wrong with the commands that I am sending to the server, they are 
in the format: USER theusername  

Here is the snippet of code, it's pretty simple:

        'stream for sending data to the server
        Dim output As NetworkStream

        'objects for reading and writing to stream
        Dim writer As BinaryWriter
        Dim reader As BinaryReader

        'message to send to server
        Dim message As String = ""

        Dim popclient As TcpClient
        popclient = New TcpClient
        popclient.Connect(gHost, gPort)
        output = popclient.GetStream()
        writer = New BinaryWriter(output)
        reader = New BinaryReader(output)
        statusbar.Text = "Connected to " & gHost & "
on port " & gPort & "."

        

        Pause(1)

        statusbar.Text = "Verifying username and password..."
        message = "USER " + gUsername + Chr(13) + Chr(10)
        writer.Write(message)

        Pause(2)

        

        writer.Write(message)
        statusbar.Text = message
        Pause(1)

        

        message = "STAT"
        writer.Write(message)

        

In summary, the pop3 server is responding with "-ERR unrecognized command" 
for any command I send.  Any ideas?

-- 
Lenny Vaz
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