E-mail from scanner@zoho.com

E-mail from scanner@zoho.com

So... I got an e-mail from " scanner@zoho.com", subject line:  Attached Image, no text, only an attachment that I did not open. Is this a legit e-mail? Because it is using the zoho.com domain, but I see that zoho corporation uses the @zohocorp.com domain.

If it is not a legit e-mail, how was someone able to create a zoho.com domain e-mail to send false e-mails?