how to solve this problem?

how to solve this problem?

Hi, my outgoing mail: lirichun@zoho.com  has been blocked. 

Can you unlock it? 

Thanks a lot! 

Moreover, is there anything i can do to avoid exceeding the DAILY 10 bounceed count, besides deleting invalid and expired mail id's?

And if  if I exceed the DAILY bounce count, will my mail be unlocked next day?

THX.