Mark -- Two more questions have recently come up with respect to banning domains:
1. Will banning a domain also head off any such messages that are sent to the group's +owner address?
2. Is it possible to ban a top-level domain? For example, I was able to add *.ru to my list of banned domains, but am unable to verify that it actually works as expected.*
Thanks for any clarity you can provide.
*Ironically, it also allowed me to ban both *.io and groups.io!