Some DLR questions..

I have some questions regarding DLR:

First, my SMPP DLR does not work. The log says this:
2002-03-06 09:46:48 [7] DEBUG: **********>>>>>>>>>>>>>>  SMPP handle_pdu
Got DELIVER REPORT

2002-03-06 09:46:48 [7] ERROR: Got DELIV REPORT but couldnt find message
or was not interested in it

Can this be a problem becuase of the fact that my SMSC demands me to set
the following :
pdu->u.submit_sm.dest_addr_ton = GSM_ADDR_TON_NATIONAL;
    pdu->u.submit_sm.source_addr_ton = GSM_ADDR_TON_INTERNATIONAL;
    pdu->u.submit_sm.source_addr_npi = GSM_ADDR_NPI_PRIVATE;
    pdu->u.submit_sm.dest_addr_npi = GSM_ADDR_NPI_PRIVATE;


Also with CIMD2 it crashes:

LOG:

2002-03-06 09:48:32 [9] DEBUG: smscconn_sender
(CIMD2:217.174.67.140:9971:globalw3): sending message
2002-03-06 09:48:33 [1] DEBUG: Dumping 0 messages and 0 acks to store
2002-03-06 09:48:39 [8] DEBUG: Looking for DLR
smsc=CIMD2:217.174.67.140:9971:globalw3, ts=020306104916, dst=46708443600,
type=1
2002-03-06 09:48:39 [8] DEBUG: created DLR message:

2002-03-06 09:48:39 [4] INFO: Starting delivery report <stefan> from
<46708443600>
2002-03-06 09:48:39 [4] PANIC: gwlib/octstr.c:261: octstr_copy_real:
Assertion `len >= 0' failed.