Loosing some Delivery Receipts

[imanep]

Hi,
im using jsmpp with .net application for sending bulk sms. when im sending 1000 -5000 sms everything is working like charm i get 100 delivery receipts but when i send above 10000 its starting loosing delivery receipts.

Could you please guide me on that?

Regards

[bhochberger]

What makes you think that the application is loosing delivery receipts? Did you check that the delivery receipts where transmitted ?
A lot of people forget that SMS is not a reliable service. There is no warranty that your SMS is delivered and there is no warranty to get delivery receipts for every message you send.
During my small tests with SMS, i regularly didn't get all delivery receipts from SMSC when i send more than one message to same phone number within one minute.