Yahoo Disabled my Group account and says...
 

When I send messages to group as owner, I receive the following email notification:

We are unable to deliver the message from <levan_una@yahoo.com>
to <active_citizen@yahoogroups.com>.

Your Yahoo! Groups account has been disabled because you had
an auto-responder set up.

For further assistance, please visit
[url]http://help.yahoo.com/help/us/groups/[/url]

PLEASE SOMEBODY HELP!!!

Did you contact Yahoo about this? Sounds like you broke their Terms of Service and you might be out of luck. It seems like Yahoo is cracking down on people who are not abiding by their TOS lately.