I am trying to run the provision command on my Exchange server but keep getting 400 Bad Request. As far as I can tell I'm sending in the correct information. The only thing I can think is the WBXML is incorrect, but I don't know to verify it. 

Here is what I'm sending in, Does the WBXML look correct (Tried Airsync WBXML 1.3 and 1.2)?

URL: https://mobile.[myexchangeserver].com/Microsoft-Server-ActiveSync?Cmd=Provision&User=jack&DeviceID=123412341234&DeviceType=iOS

 Authorization = "Basic wekrju283j"; //Base 64 encoded auth, garbage for this posting
"Content-Length" = 104;
"Content-Type" = "application/vnd.ms-sync.wbxml";
"MS-ASProtocolVersion" = "12.1";
"User-Agent" = MyApp;
"X-MS-PolicyKey" = 0;

Body (converted to WBXML before sending):
<?xml version="1.0" encoding="utf-8"?>
<Provision xmlns="Provision:">
  <Policies>
    <Policy>
        <PolicyType>MS-EAS-Provisioning-WBXML</PolicyType>
    </Policy>
  </Policies>
</Provision>


WBXML (1.2): 02 00 25 6A 41 50 72 6F 76 69 73 69 6F 6E 00 50 6F 6C 69 63 69 65 73 00 50 6F 6C 69 63 79 00 50 6F 6C 69 63 79 54 79 70 65 00 2D 2F 2F 41 49 52 53 59 4E 43 2F 2F 44 54 44 20 41 69 72 53 79 6E 63 2F 2F 45 4E 00 44 00 44 0A 44 13 44 1A 03 4D 53 2D 45 41 53 2D 00 83 00 03 69 6E 67 2D 57 42 58 4D 4C 00 01 01 01 01
WBXML (1.3): 03 00 25 6A 41 50 72 6F 76 69 73 69 6F 6E 00 50 6F 6C 69 63 69 65 73 00 50 6F 6C 69 63 79 00 50 6F 6C 69 63 79 54 79 70 65 00 2D 2F 2F 41 49 52 53 59 4E 43 2F 2F 44 54 44 20 41 69 72 53 79 6E 63 2F 2F 45 4E 00 44 00 44 0A 44 13 44 1A 03 4D 53 2D 45 41 53 2D 00 83 00 03 69 6E 67 2D 57 42 58 4D 4C 00 01 01 01 01