[SR-Users] msilo dump with non 2xx answer

Hi, I set instant message store&forward in kamailio using MSILO module. It works fine in many cases. We have special message handing (encryption in "session"), i do not go into detail since it is not necessarily to solve the problem. So there are situations, when the offline receiver should get a MESSAGE and will acknowledge with 4xx status code, like 493: the original message is stored in silo table and when the receiver will be online, it will be dumped and he will send 493. Question: how can I delete the message from silo table with MSILO (since it is not 2xx) and how can i forward this ack message to the original sender instead kamailio? Thanks. Dr. Péter Barabás Director of Software Development Arenim Technologies AB.