title: Get ID DLR in Kannel
body: <p>I developed an application that uses the Kannel to send SMS to a SMSC via SMPP. I send for Kannel sendSms using http and get a status update and sms responses via DLR-URL. But I'm not knowing capture an ID for this message, I can not identify it on my system.</p>
  
  <p>Is there any parameter that Kannel send the DLR-URL that identifies the message? Or, you could spend a parameter customized by sendSms and then capture it in DLR-URL?</p>