Receiving and sending mail with smtp.mydomain.com

Receiving and sending mail with smtp.mydomain.com

I would like to be able to receive and send mail using imap.mydomain.com and smtp.mydomain.com rather than using zoho.com.  I have validated the domain and am setting up our users, but I want the emails to show that they are sent from the business rather than from Zoho.

Is there a way to do this?

David Gleason