[rbldnsd] Newbie questions

[furio ercolessi]

On Thu, May 19, 2011 at 12:58:22AM +0800, Phoenix Kiula wrote:
> Is there a way to use rbldns WITHOUT subscribing to an RBL?
> 
> I want to do this:
> 
> 1. RBL check from public database
> 2. Each check is cached for a certain time, say a day (86400 seconds)
> 3. Every subsequent RBL check for IPs that are in my local cache get
> checked locally, not needing to go outside
> 
> If this is possible, are there any easy instructions to set this up?

It should also be said that DNSBL operators generally do not like at all
users that reject mails based on old data, because this increases their
workload.

When an IP goes out of a BL, it is expected that all rejections will have
stopped after a time corresponding to the TTL has elapsed.  This time is 
usually measured in minutes.  Blocking mail for a whole day after an IP 
has been removed will often cause irate reactions from the blockee to
the DNSBL operator, even if the problem is caused by some user 
operating his installation under criteria different from those defined
by the DNSBL operator.

furio