Am 04.11.2016 um 12:23 schrieb Holger Schramm:
If you don't like them, don't use their services. It is really that easy.
That's the one part, the other part is what Dianne wrote about. If this happens to you better be sure to have a 2nd MX ready with a totally different IP address.
Every mail server administrator that uses a blacklist has to keep in mind that he gives the decision about good or bad ips/mails/whatever to a third, mostly unknown, person. I trust _none_ of them. Do you know the people of any other blacklist? Who assures you that there is not a crazy monkey in the background doing some strange stuff with the listings? Nobody.
The thing is: RBLs are cheap on CPU usage and one of the first things to be checked to discard SPAM. They are not error free, but very convenient to use.
And yes, some lists have been doing quite funny things in the past, including Spamhaus.
If you don't trust them, well, you can always use them to build a score like SA does and then build your trust upon that score.
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