Hello Josiah,
I know, that they are going privately to that one person.
I got already some private mails over this group from other persons.
Replying to those mails is no problem- it goes directly over googlemail.
So it seems not to be a problem with googlemail, but with googlegroups or especially with this googlegroup.
And I also have already written 2 mails privately to other persons in threads here in this google group. Successfully.
But: About 7 mails, written privately here in a thread (clicking on "answer the author private") haven't been sent out.
I find this really strange. I didn't change anything.
Surya