[Asterisk-Users] Newbie SIP question

[Ed Greenberg]

I'm trying to set up my first phone, Windows Messenger running on an 
attached PC.

It's talking to the server, but the server never responds. Instead, it 
gives this error:

Mar 10 06:26:20 WARNING[163851]: chan_sip.c:455 __sip_xmit: sip_xmit of 
0xbe5fa5e0 (len 490) to 192.168.1.99 returned -1: Operation not permitted

I could use some suggestions :)

My Asterisk is running on my router box:

[internet]---<assigned_addr>[router]192.168.1.106---[localnet]-->
	<---192.168.1.99[pc with winmsgr]

I've opened port 5060 UDP in the router, to allow the local net to connect 
to the router box and back.

ACCEPT          fw              loc             udp     5060
ACCEPT          loc             fw              udp     5060

I configured Win Messenger as per 
<http://pulver.com/fwd/quick/direct-msn.html>

My sip.conf contains:

[general]
general]
port = 5060                     ; Port to bind to
bindaddr = 0.0.0.0              ; Address to bind to
localnet = 192.168.1.0         ; Internal NETWORK address
localmask = 255.255.255.0      ; Internal netmask
context = default               ; Default for incoming calls

[malfoy]
type=friend
username=malfoy
fromuser=Ed Greenberg
secret=2368
host=dynamic
defaultip=192.168.1.99