Your desire not to receive spam from any source is admirable but seriously mistaken. It should be you that decides what is spam and not VM. Their spam filters are capricious and if your spam settings are anything other than these:
you run the serious risk of the system rejecting legitimate mail as spam.
I'm afraid that the spam filters are slower to learn that any one would like. You should still mark as spam anything that you regard as spam but remember that others getting this stuff may not have done so. The spam filters collectively start to wonder what is spam. So it still gets treated as wanted e-mail and gets through.
Superuser 2017/18 Use Kudos to say thanks Mark answer as "helpful" only when the problem is solved Please don't send me private messages unless I ask you to. I do not work for VM. The advice I give is based on my best understanding of VM policy and practice. You rely on it at your own risk.