开云体育

As Chris suggested have a look at your group's Activity log to see if you can match any of her attempts to entries about "attempted to send". But you'll only see that if she's sending to the correct address for group posting.

To verify that she's got the group posting address right have her CC you at your email address the next time she attempts to post to the group. Assuming you receive her message you'll be able to double-check the To address she used for the group.

Shal