I've just started a new Google Group to replace an old email list that proved unreliable. An email address I'd like to add as a member is being rejected because Google Groups thinks it's already a member. The address does not show up on the members list nor the outstanding invitations list.
Two potential reasons:
The owner of the address in question is already a member of the list, but with a different email address. He wants to add his second address as well, but that his first address is a member already is somehow preventing this. However, other members of the group have already successfully added two different email addresses to the group.
The email address for the old, unreliable list is currently a member of the Google Group. The email address I'm having trouble adding is the owner of the old list, and that is preventing his being added.
Both potential reasons seem fairly far fetched to me. Any help would be appreciated.