How do I remove "on behalf of" address in the From field?

How do I remove "on behalf of" address in the From field?

I have authenticated my domain and it shows verified for both SPF and DKIM, I have also verified the sender address. Nevertheless, the test email I'm sending for the campaign arrive with "<zoho address> on behalf of <my address>" in the From field. Please advice what's the right way to avoid this. I want just my address to appear in the From line. I have the same problem for emails sent from CRM. If it makes a difference, we're for now using the free version. Thanks.