Re: Owner of this list
And, just as an aside, when it comes to writing the Group Owner for any group on Groups.io the e-mail address can safely be assumed to be "main+owner" with what comes after the @ sign being the same as whatever the posting address is. In the case of this group that's firstname.lastname@example.org.
They sometimes get aliased without the "main+" part, but not always.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
Explanations exist; they have existed for all time; there is always a well-known solution to every human problem — neat, plausible, and wrong.
~ H.L. Mencken, AKA The Sage of Baltimore