Yep, have had a couple of forums I visited do that. Always sad when they fade away 🙁 Even sadder when it happens during a lively discussion 🙁
Looks like vBulletin has its own spam protection now. No idea how long its had it, though.
Never had that issue. I have had issues where they keep spamming me even though I keep telling them I want to be removed from the mailing list as I haven’t bought anything from them in well over a decade. They seem to put me back on the spam list every year or two for whatever reason. Pretty annoying 😛