Re: [hylafax-users] caller-id fax blacklist

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Steve Hanselman wrote:

> The one problem I can see is that one guys spam is another guys interest
> (I'm sure that some of the faxes I block others would be interested in),
>
> Nice idea though, might need to have some kind of reporting threshold (a
> bit like DCC etc).
>  

Well, in the cases where I'm filtering out junk fax callers I also have 
DID available, so I could theoretically disable the filtering on a 
per-DID basis, but as of yet I haven't met anyone who has been missing 
their junk faxes.

> Lee, how do you block, just based on case statements in faxrecvd or
> something a bit slicker, any chance of posting your code?
>  

In the cases where I'm filtering I am using an Asterisk PBX, and so I 
just drop the call on the PBX-side.  This may help prevent the faxer 
from calling back, too... eventually they may learn that the number is 
not a fax number for them.  In Asterisk I just use an AGI script.  
However, I could do something similar in HylaFAX's DynamicConfig ... 
except actually dropping the call may be more difficult (normally 
DynamicConfig just won't answer).

> Also, one thing I'd like to do is to be able to down speed the receive
> on blacklisted numbers, I figure I can do others a favour if it takes 10
> times as long to send us a fax from one of these guys, any idea on how
> to achieve that?

You may be able to get away with this in Class 1 and DynamicConfig with 
forcing a Class1RMQueryCmd response to indicate, say, only V.27ter 
(2400/4800 bps) support.  In my case doing this would be unacceptable - 
because it still costs me the line resources to play with the junk faxer 
that way... I just want him to go away quickly... and let me get my 
modem and line back and available to acceptable use.

Lee.


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