October 2, 2023 1:42 PM, "Wietse Venema via Postfix-users"
wrote:
> patpro--- via Postfix-users:
>> OK, this is where I was wrong. I thought postscreen would cache
>> the result of the DNS queries for at least postscreen_dnsbl_min_ttl.
>> Most dnsbl have a crazy short TTL, I was hopping to get
patpro--- via Postfix-users:
> hello,
>
> September 29, 2023 4:30 PM, "Wietse Venema via Postfix-users"
> wrote:
>
> > postscreen does not duplicate DNS caching. DNS lookup results are
> > already cached in a non-Postfix DNS resolver (see /etc/resolv.conf).
>
>
> OK, this is where I was
hello,
September 29, 2023 4:30 PM, "Wietse Venema via Postfix-users"
wrote:
> postscreen does not duplicate DNS caching. DNS lookup results are
> already cached in a non-Postfix DNS resolver (see /etc/resolv.conf).
OK, this is where I was wrong. I thought postscreen would cache the result of
patpro--- via Postfix-users:
> Hello,
>
> I'm surprised to see that dnsblog can issue up to 40 absolutely
> identical DNS requests per seconds, for postscreen, when my setup
> reads:
postscreen does not duplicate DNS caching. DNS lookup results are
already cached in a non-Postfix DNS resolver
