Re: RBL for e-mail addresses POSTFIX

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On 9/26/20 3:55 PM, KIKI wrote:

> Let's don't talk about politics. BL lists work and I don't care who run=
s
> them and for what reason. We should be happy they exist. The same
> situation is with ad blockers. I don't care who is behind. They simply =
work.

Reveling in your ignorance isn't noble, it's sad.  You would not last
long in the I.T. world.

Why should I be happy RBLs exist?  I'd prefer they weren't needed.
That's a failure (or a feature) of how the internet works.
Nevertheless, I'm not ignorant of how they work and the criteria for
inclusion in said RBLs.

Many (most?) have honeypots scattered about. These are machines that
accept email, but which should never have email delivered to them. Any
connections, and attempts to deliver mail to them, are not legitimate.
The connecting IP address can be assumed to be a spammer or part of a
spam botnet.

Decent lists require multiple confirmations before the IP address is
blacklisted.  Blocking email is serious. You don't want to fuck up and
block legit senders.

Decent lists also expire entries when no spam is detected coming from
those IP addresses for some predetermined amount of time.

IP addresses sometimes change hands... You don't want to blacklist
blocks forever.. You just want to block them while they are sending
spam.  Nothing worse than getting a new IP block from your ISP and
finding out every goddamn one of them is on a blacklist.








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