[Users] Sometime t_really() func seem to be endless

Bodin Bruno bbodin01 at univ-lr.fr
Thu May 24 15:43:26 CEST 2007


Bogdan-Andrei Iancu a écrit :
> Henning Westerholt wrote:
>> On Donnerstag, 24. Mai 2007, Bogdan-Andrei Iancu wrote:
>>  
>>> Hi Bodin,
>>>
>>> that's because of the blacklists - openser "learns" the failed
>>> destinations (like the 503 replied) and block them for some time (4
>>> minutes) to prevent useless processing.
>>>
>>> You can disable this auto-learning for blacklists:
>>>     disable_dns_blacklist=yes
>>>     
>>
>> To warm-up an old discussion about this feature:
>>
>> i think this should be really disabled by default, because of user 
>> confusion and possible security issues.
>>   
> I agree it confuses a bit (maybe because of the lack of docs), but 
> other other hand it is useful as it spears a lot of resources without 
> any deep knowledge from the user. Anyhow, what security issues do you 
> see here?
>
> regards,
> bogdan
>
>
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but is it possible to make a white list to counter black list and keep 
this feature ?




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