Email send error when emailing club distribution account

Brian, I am afraid I have confused the situation with TMI.  May I start over?

The main problem:
I sent an email to club 7610 member distribution, as you see on the screenshot.
It came back undeliverable two times.
I sent the same email to individual users, and it went just fine.
I am not able to successfully send an email to the member distribution of 7610.
My support account was set up (erroneously) under my personal email account.  So the sending email and my support account userid do not match.

Does that help?
jeni

You sent FROM what email address TO what club email?

I think I found the error, Brian.  

Sent from:  toastmasterjeni@gmail.com
Sent to: "members-7610@toastmastersclubs.org"

The sent to: is not an email address.  I copied it from our web page, and never noticed.  Let me get with someone to get correct address.
I will test it, then ask you to close this request.

Thanks, 
jeni

Brian, the email address that has not worked for a week is now working.  I cannot explain it, and don't want to pursue.  Please close this request.