Is that I didn't vote for them to be spam cop... Twice in 5 years our extremely locked down email server ended up on their black list even though we weren't open for relay. The 3rd time we filed in federal court for loss of business. That was the last time we had a problem with them. I assure you - ORDB.org didn't remove hosts or stopped testing hosts based on legal threats. While legal action might work in the US, ORDB.org was based out of a small Scandinavian country where US courts do not have any jurisdiction.
$ host 192.68.1.1.relays.ordb.org 192.68.1.1.relays.ordb.org has address 127.0.0.2
ORDB.org is not - and never was - blocking anything. The blocking is done by the (misconfigured) mail servers.
The ORDB.org crew has been very reluctant to take this kind of action but as mentioned elsewhere the owners of the remaining DNS servers would very much like the traffic for ORDB.org to cease.
It seems you (and many other readers) are not familiar with the S/390 (or z-series) platform.
Yes, it is one box, but that does not mean, that gaining access to one server gives you the ability to access other server in the box, provided your general security is good enough
One of the few components in this box which is not redundant is the CP-unit it self, which have a MTBF around 60 years(!)
From a hardware point of view it doesn't matter is the box runs VMS, OS/390 or Linux in it's VM's, but for the Linux community this is yet another step towards world domination;)
Everything is done at DNS level
ORDB.org is not - and never was - blocking anything. The blocking is done by the (misconfigured) mail servers.
The ORDB.org crew has been very reluctant to take this kind of action but as mentioned elsewhere the owners of the remaining DNS servers would very much like the traffic for ORDB.org to cease.
From my point of view, you need A+ security no matter wether you're running 1500 virtual servers in one box or 1500 physical servers.
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