I'm getting at least half a dozen spam emails that cannot be blocked due to the return address not being standard. When I try to block it, I get a message saying it can't be blocked because the sender's email address isn't valid. Here's one of the sender email addresses I got:

 Thank you! CVS
<495X6EFI@________________________________________________________________________________________________________________.WW3.________________________________________________________________.MAnANDI.__________________________.ORG>

Anyone else getting these? I'm going to try and change my email settings to exclusive and see if that works.