I don't know what, if anything, is wrong with it. They do occasionally break. I'd create a new list and just drag the contents of this broken one into the new list. When you're sure the new one works, delete the old one.

There is anecdotal evidence that spaces in names of Mailing Lists can cause trouble, though you have several examples of these and they clearly have worked and do work. Similarly, it's been reported that it's best to leave the description field empty too.

Finally, if I were one of the people whose email address had been posted, I'd be very angry with you.

Thanks. I thought about not posting everyone's email but thought it might be helpful in solving the problem. Obviously, could create other problems, though.  :-( I'll see if I can delete.

It was helpful, because it removed any doubt about the format of the addresses. On the positive side, it's a screenshot, not actual text, so unlikely to be picked up by those who scan the Web for email addresses. You should be able to edit the original message and remove the image.

Have you tried rebuilding the list? Are you confident that all these addresses work individually? Given the small number of addresses, you could, as a test, compose a message with the addresses individually filled in. If it still fails on sending, then one of more of these addresses might be out of date or disused.

I created a new list, "WineWomen" and that worked fine. So, that must have been the problem. I was also able to remove the attachment with the email addresses. Thanks for your help!