I have Non Polling Receive API Status Checked

HTTP API Status Checked
Protocol HTTP

Server an IP address that works.
Port 80

Server Default Page DefaultSMS.apsx
Send Encoding Flag Checked
Server Authentication Tried both checked and unchecked.

If I manually enter the server information and the default page such as 128.00.00.123/DefaultSMS.apsx I get the page that I am looking for. If I send a message to the MultiTech server the message is logged in the inbox but I do not get anything that fires the DefaultSMS page. Currently I only have a little process that logs when the page gets hit.

What do I need to check?  I’m using VB.NET

Thanks

Added information: I believe that the page is getting polled about every 5 seconds but the input stream length is always 0 .  I’m still not sure that the iSMS is send any data to the web page.

More information:  All that I get at the web page is Parameter name: s Value cannot be null.  Is there any one that I can pay for support or help?

Apr 17 03:05:33 boa: recvlivelog: Failed to send non-polling message. Will attempt to resend later.
Apr 17 03:06:03 boa: recvlivelog: Non-polling message [index: 1]: 04:05:26, 15/04/17, +18438225929, Ok
Apr 17 03:06:03 boa: recvlivelog: Non-Polling delivery response from server: HTTP/1.1 400 Bad Request
Apr 17 03:06:03 boa: recvlivelog: HTTP NON-POLLING RECEIVE API DELIVERY FAILED: 400 Bad Request
Apr 17 03:06:03 boa: recvlivelog: Non-Polling Post Failed to Send. Will try again later.

Apr 17 03:07:33 boa: recvfaillog: HTTP Non-Polling Receive API message that failed:
POST /http://xxx.xx.9.212/web/ismsResponse.aspx HTTP/1.1
HOST: xxx.xx.9.212:80
User-Agent: MultiModem iSMS/1.51.28
Accept: text/xml, application/xml, application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png, */*
Accept-Language: en-us; en;q=0.50
Accept-Encoding: gzip, deflate
Accept-Charset: ISO-8859-1, utf-8;q=0.7, *;q=0.7
Keep-Alive: 300
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 545