Cannot send mails. The error i get is Suspicious activity found

I was trying to send 90 recipients (our long time customers) an email. We send out these same emails every month with no problem. In fact, we usually send out about 1,000 (90 per hour). No one else has the password or uses this email box except me. I didn't have any trouble logging in.

I don't know if this has something to do with New Years Eve but all of a sudden after 2 years now I'm getting this error message below.





Your message was not sent

Suspicious activity has been detected on your account. To protect your account and our users, your message has not been sent.

If this error continues, please contact Yahoo! Customer Care for further help.

We apologize for the inconvenience.




Thanks,
The Yahoo! Mail Team






I was trying to send 90 recipients (our long time customers) an email. We send out these same emails every month with no problem. In fact, we usually send out about 1,000 (90 per hour). No one else has the password or uses this email box except me. I didn't have any trouble logging in.

I don't know if this has something to do with New Years Eve but all of a sudden after 2 years now I'm getting this error message below.
Your message was not sent
Suspicious activity has been detected on your account. To protect your account and our users, your message has not been sent.

If this error continues, please contact Yahoo! Customer Care for further help.

We apologize for the inconvenience.


Thanks,
The Yahoo! Mail Team

I also want to know about this problem. I also want to know about this problem.