Getting suspicious activity messager. Won't let me send emails. Need to send these for by business.?

Hi Steve,

Sorry you are having trouble with your account.

As the message states, you are seeing this message because our system has detected unusual activity on your account. We recommend you visit account.yahoo.com and update your account security information.

For more information about the message you are receiving please see our help page at help.yahoo.com/kb/index?page=conten...

If you have Yahoo! Small Business services then please contact us at smallbusiness.yahoo.com/contactus for help.