2008/9/1 Daniel Camacho - PA <[EMAIL PROTECTED]>: > Hi, > > someone can explain me what NACK/67/Invalid esm_class field data DLR SMS > apparently error stands for? Randomly most of my messages aren't delivered.
It means that some of the needed data for the SMS is missing or its bad formatted. What does Kannel log say? Can you send messages without DRL successfully? If that is the case check if the operator has enabled DLRs. HTH, Jovan
