[rbldnsd] List servers

[Per Jessen]

Scott Haneda wrote:

> For example, SpamAssassain may come pre-defined with 5 known BL's, and
> will have pressure from larger BL's to list those in some form of
> order?
> 
> I had no idea about this, nor did I think anyone used the default
> lists. 

Yeah, most people do - well, that's my guess anyway. 

> Everyones MTA traffic and internal policy is different. What a school
> may get away with using as a BL, an ISP may not, and have to be 
> much less agressive.

ISPs are in a different situation altogether, yes.

> I always figured rsync would be too latent in data to be truly useful.
> IP's/email addresses/URI's/domains come and go so fast. This entire
> model is built around fast delisting for errors, and even faster
> listing for spammers to be effective.

In my experience, rsync is good enough for down to 5 minute intervals
(depending on the amount of data). If you need less, yes, you'll have
to look at some sort of near-real-time update mechanism. 


/Per Jessen, Zürich