Email bouncing back from Members List -- another club affected

Looks like I'm not the only one with the problem. Tried to send a message to all members this morning (10 AM PST 5/29/14) and near as I can tell--- I'm the only one that got delivered. Club #678.

Here's the message itself stripped of member address. Let me know if you need the headers. Still getting bounce backs one at a time and the count is up over 20 now --- one for each email address.

Your message to (xxxx@msn.com in members@egtm.org) had the following error and was not delivered (0 retries):
Can't send data

Thanks for a quick reply or at least notice that you've seen this and are working on it. We have a meeting tonight and looks like most folks won't get the details.

Thanks,
Rusty Lee
Evergreen Toastmasters
Club 678

We applied some additional fixes please try again.