Alexandre J. Correa (Onda)
alexandre at onda.net.br
Mon Oct 26 20:35:42 UTC 2015
Yes, this only handles DNSBL records ...
Em 26/10/2015 17:26, Dave Warren via Unbound-users escreveu:
> On 2015-10-25 09:20, Stephane Bortzmeyer via Unbound-users wrote:
>> On Sun, Oct 25, 2015 at 12:59:23AM -0700,
>> Dave Warren via Unbound-users <unbound-users at unbound.net> wrote
>> a message of 58 lines which said:
>>> Unbound has a "cache-max-negative-ttl", but no minimum is listed at
>> I disagree, there is:
>> cache-min-ttl: <seconds>
>> Time to live minimum for RRsets and messages in
>> the cache.
>> Default is 0. If the minimum kicks in, the data is
>> cached for ...
>> Note that, unlike cache-max-ttl, it is a violation of the protocol
>> and, of you use it, horrible things may happen.
> Doesn't this control minimum TTLs on all queries, not just negative
> At least in the context of a mail server, over-caching negative
> results will only cause a small amount of pain whereas over-caching
> positive results may cause real deliverability problems.
> If this instance of Unbound only handles DNSBL traffic and nothing
> else, then it's possibly not-too-dangerous, at least if the minimum is
> kept reasonable. A handful of minutes, perhaps?
Alexandre Jeronimo Correa
Office: +55 34 3351 3077
More information about the Unbound-users