We recently had some issues with dns blacklisting and 473 as well, we
had to disable blacklisting on our production proxies. Unfortunately I
wasn't able to reproduce the problem so far.
It *seems* that sometimes the blacklist gets activated mistakenly for
targets that are alive. E.g. we weren't able to call our gateways
anymore (always got back 473 immediately from the proxy) even though
these gateways always have been up.
Do you always get back 473 or does this only happen occasionally?
Christian
Zahid Mehmood wrote:
James,
thanks for your reply.
I tried capturing the 473 in failure route but it doesn't look like it
makes it that far.
t_on_failure("4");
t_on_reply("4");
if (!next_gw()) {
sl_send_reply("503", "Service not available - No gateways");
xlog("L_ERR","$ci: 503 Service not available - No gateways
rU=<$rU>, ruri=<$ru>\n");
return;
};
if (!t_relay()) {
xlog..... msg1
sl_reply_error ();
} else {
xlog msg 2
}
and I don't see either one of the messages from if (!t_relay()) logged.
There is an xlog right at the top of failure route which is not logged
either.
This is what I see in openser log when using dubug=9
Jul 23 09:35:06 mousse openser[5276]: DBG:check_against_rule_list: using
list dns
Jul 23 09:35:06 mousse openser[5276]: DBG:check_against_rule_list:
matched list dns
Jul 23 09:35:06 mousse openser[5276]: DEBUG:tm:t_forward_nonack: blocked
by blacklists
Jul 23 09:35:06 mousse openser[5276]: ERROR:tm:t_relay_to:
t_forward_nonack returned error
Jul 23 09:35:06 mousse openser[5276]: parse_headers: flags=ffffffffffffffff
Jul 23 09:35:06 mousse openser[5276]: check_via_address(192.168.12.174,
192.168. 12.174, 0) (
Jul 23 09:35:06 mousse openser[5276]: DBG: trans=0xb604f518, callback
type 128, id 0 entered
Jul 23 09:35:06 mousse openser[5276]: ACC: call missed:
timestamp=1185197706;method=INVITE;from_tag=F2953709-6DD8ACE4;to_tag=;[EMAIL PROTECTED];code=473;reason=Request
Failure
Thanks again for your help.
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