On Wed, 2009-09-23 at 08:57 +0200, Jakob Schlyter wrote: 
> On 18 maj 2009, at 10.43, Fredrik Thulin wrote:
> 

> has anyone implemented something like this? I'd like to use this to  
> add support for simple blacklisting:
> 
> 1) use a regexp to transform the From: (or perhaps P-Asserted-Identity  
> with tel:) into an E.164 number
> 2) do a ENUM-like lookup in some configurable domain, like query for  
> 0.0.0.8.7.8.7.1.3.6.4.e164.arpa. TXT

Is type of blacklisting used in SIP devices and/or documented in any
draft or similar?

> 3) if something record at the given domain name, reject the call with  
> '603 Decline'
> 

I don't agree with this reponse code. It needs to be configurable or of
type 4xx, because 6xx is harmful I think.

/Mikael

> I'm no erlang wizkid, but I could assist in setting up the DNS stuff  
> if someone can assist with the code.
> 
>       jakob
> 
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