InetLab

14:34:14: ERROR: 10: (MM7Client) Message sending failed., Exception: Inetlab.MMS.MM7Exception: Unknown server response
at Inetlab.MMS.MM7Client.Sqn4KlZw7p(MediaMessage )
at Inetlab.MMS.MM7Client.NZezh67VO(MediaMessage )

Hello ahmed_ali,

This error means that library cannot parse response from server. Possible it is only html with unknown web server error.
You need to turn on tracing and check what server has sent to you.

Which version do you use?