what i get when i log the file log kennel.log
2015-07-13 11:41:04 [7685] [2] DEBUG: HTTP: Creating HTTPClient for 127.0.0.1'. 2015-07-13 11:41:04 [7685] [2] DEBUG: HTTP: Created HTTPClient area 0x7ff028000a90. 2015-07-13 11:41:04 [7685] [3] DEBUG: HTTP: Resetting HTTPClient for127.0.0.1’.
2015-07-13 11:41:12 [7685] [3] DEBUG: HTTP: Resetting HTTPClient for 127.0.0.1'. 2015-07-13 11:41:30 [7685] [8] DEBUG: boxc_receiver: sms received 2015-07-13 11:41:30 [7685] [8] ERROR: Could not open file/var/spool/kannel/store/6/5ba06812-4cfd-49db-b5aa-cfb9532a2843’.
2015-07-13 11:41:30 [7685] [8] ERROR: System error 13: Permission denied
2015-07-13 11:41:30 [7685] [8] DEBUG: send_msg: sending msg to box: <127.0.0.1>
2015-07-13 11:42:12 [7685] [1] DEBUG: Timeout for fd:31 appeares.
2015-07-13 11:42:12 [7685] [1] DEBUG: HTTP: Destroying HTTPClient area 0x7ff028000a90.
2015-07-13 11:42:12 [7685] [1] DEBUG: HTTP: Destroying HTTPClient for `127.0.0.1’.
Try to run this:
mkdir -p /var/spool/kannel/store
chmod 777 -R /var/spool/kannel
thank you 
no more this error