DLR not receive

I find this error in the log . No DLR-URL is returned. ERROR: SMPP[sms]: got DLR but could not find message or was not interested in it id28ADB3B9 dst, type2 How to fix this problem ?

Re: DLR not receive

Hi It means kannel received a dlr with the mentioned id/source but kannel wasn't able to find a reccord for it on its reccords. This is either a mismatch on the message id (check msg-type) and /or the corresponding dlr was deleted either manually or by reseting kannel setup with internal stoage