Spam mail being sent to me, from my zoho email alias'

Spam mail being sent to me, from my zoho email alias'

My email addresses (all the same account) are receiving spam emails, that state one of my accounts as the "sender", however when you hover over the sender it is in fact being sent by unknown senders. The spam emails appear to be sending documents/files and invoices. I need this resolved asap. One of which is  james@consultechmgt.com, please ban this account from sending me email immediately.