読者です 読者をやめる 読者になる 読者になる

No hierarchical structures in the Google Groups mailing list service

It is prohibited to add an @googlegroups.com address as a member of other Google Groups. Even if one introduces a intervening forwarding address (not @googlegroups), an @googlegroups address cannot receive e-mail deliveries from other google groups mailing list. Perhaps they automatically spot the forwarding behavior by watching the similarity of messages.