[Serusers] fifo UAC completed with status 408

[Walter Willis]

I am behind a firewall that [ports bookseller.  
I use the serweb for neviar a mensage to an user and it leaves an error:  
  
408 Request Timeout.




and in the log it leaves this. 


9(4027) fifo_get_method: method: 'MESSAGE'
 9(4027) DEBUG: fifo_get_ruri: 'sip:walter at cwafrica.com.pe'
 9(4027) DEBUG: fifo_get_nexthop: next hop empty
 9(4027) fifo_get_headers: headers: From: sip:rbolivar at cwafrica.com.pe
To: <sip:walter at cwafrica.com.pe>
p-version: Web_interface_Karel_Kozlik-0.9
Contact: <sip:daemon at cwafrica.com.pe>
Content-Type: text/plain; charset=UTF-8

 9(4027) parse_headers: flags=-1
 9(4027) end of header reached, state=9
 9(4027) DEBUG: get_hdr_field: <To> [30]; uri=[sip:walter at cwafrica.com.pe]
 9(4027) DEBUG: to body [<sip:walter at cwafrica.com.pe>
]
 9(4027) DEBUG: fifo_uac: parse_headers succeeded
 9(4027) fifo_get_body: body: sdas

 9(4027) end of header reached, state=8
 9(4027) DEBUG: get_hf_block: one more hf processed
 9(4027) DEBUG: get_hf_block: one more hf processed
 9(4027) DEBUG: get_hf_block: one more hf processed
 9(4027) DEBUG: fifo_uac: EoL -- proceeding to transaction creation
 9(4027) DEBUG: mk_proxy: doing DNS lookup...
 9(4027) get_record: lookup(_sip._udp.cwafrica.com.pe, 33) failed
 9(4027) sip_resolvehost: no SRV record found for cwafrica.com.pe,
trying 'normal' lookup...
 9(4027) DEBUG: dlg2hash: 23003
 9(4027) DEBUG: add_to_tail_of_timer[4]: 0x2ad72a80
 9(4027) DEBUG: add_to_tail_of_timer[0]: 0x2ad72a94
 9(4027) INFO: fifo_server: command empty
10(4052) DEBUG: timer routine:4,tl=0x2ad72a80 next=(nil)
10(4052) DEBUG: retransmission_handler : request resending
(t=0x2ad72970, MESSAGE s ... )
10(4052) DEBUG: add_to_tail_of_timer[5]: 0x2ad72a80
10(4052) DEBUG: retransmission_handler : done
10(4052) DEBUG: timer routine:5,tl=0x2ad72a80 next=(nil)
10(4052) DEBUG: retransmission_handler : request resending
(t=0x2ad72970, MESSAGE s ... )
10(4052) DEBUG: add_to_tail_of_timer[6]: 0x2ad72a80
10(4052) DEBUG: retransmission_handler : done
10(4052) DEBUG: timer routine:6,tl=0x2ad72a80 next=(nil)
10(4052) DEBUG: retransmission_handler : request resending
(t=0x2ad72970, MESSAGE s ... )
10(4052) DEBUG: add_to_tail_of_timer[7]: 0x2ad72a80
10(4052) DEBUG: retransmission_handler : done
10(4052) DEBUG: timer routine:7,tl=0x2ad72a80 next=(nil)
10(4052) DEBUG: retransmission_handler : request resending
(t=0x2ad72970, MESSAGE s ... )
10(4052) DEBUG: add_to_tail_of_timer[7]: 0x2ad72a80
10(4052) DEBUG: retransmission_handler : done
10(4052) DEBUG: timer routine:0,tl=0x2ad72a94 next=(nil)
10(4052) DEBUG: FR_handler:stop retr. and send CANCEL (0x2ad72970)
10(4052) ->>>>>>>>> T_code=0, new_code=408
10(4052) DBG: callback type 6, id 4 entered
10(4052) DBG: acc: on_missed: no uas.request, local t; skipping
10(4052) DEBUG: local_reply: branch=0, save=0, winner=0
10(4052) DEBUG: local transaction completed
10(4052) !!!!! ref_counter: 0
10(4052) DEBUG: fifo UAC completed with status 408
10(4052) DEBUG: fifo_callback sucesssfuly completed
10(4052) DEBUG: add_to_tail_of_timer[2]: 0x2ad729b8
10(4052) DEBUG: final_response_handler : done
10(4052) DEBUG: timer routine:7,tl=0x2ad72a80 next=(nil)
10(4052) DEBUG: timer routine:2,tl=0x2ad729b8 next=(nil)
10(4052) DEBUG: wait_handler : removing 0x2ad72970 from table
10(4052) DEBUG: delete transaction 0x2ad72970
10(4052) DEBUG: wait_handler : done









can somebody explain to me that it happens?
do I have to put rules to the servant or to configure in another way
the sip_exprees?
I need him to work with nat.