Minimum TTL?

Michelle Konzack linux4michelle at
Thu Feb 8 11:30:04 UTC 2018

Hello Harald,
Am 2018-02-08 hackte Reindl Harald in die Tasten:
> you miss the topic
> many DNSBL's have a very short TTL and at the same time a limit of
> queries froma single IP until you need to pay for the service
> so if you have a inbound MX and the RBL has 2 seconds TTL and a botnet
> is trying to deliver spam to you override the 2 scodn TTL with 90
> seconds or whatever makes sense reduces the total amount of DNS requests
> dramatically

Sounds logic.

And this feature was rejected by the Bind Developers?

Michelle Konzack        Miila ITSystems @ TDnet
GNU/Linux Developer     00372-54541400

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