Email replies going to my zoho.com email address instead of my business one.

Email replies going to my zoho.com email address instead of my business one.

Some replies to emails sent from my business address are going to the zoho.com address. This does not happen all the time, so I have no idea how to correct this. Unfortunately, they are always important emails I need to act upon promptly, and I do not check this address habitually. Either way, I do not want people to have the zoho address anyway. 

Looking forward to your reply.

Thanks!