It’s not something that DreamHost is doing. From the link you provided:
Wait! There’s more…
[quote]IP Address 18.104.22.168 is not listed in the CBL.
It was previously listed, but was removed at 2014-08-15 13:23 GMT (1 hours, 53 minutes ago)[/quote]
You created an account on the forum just to complain? That’s hardcore, that is.