Custom Return Path in OTM

Summary:

How to customize the Return Path DMARC configuration in OTM?

Content (please ensure you mask any confidential information):

The customer needs to set the DMARC to Reject.
After clicking on the Return Path button, the values Subdomain, CNAME Value, and CNAME Subdomain were generated, and the customer has added the corresponding record to their public DNS.

However, we still need to know which Return-Path (Envelope-From) OTM uses when sending system-generated emails.
Specifically, we need to understand whether the Return-Path is in the format:

• <user@frasb.customeremail>
  or
• <user@customeremail >.

Could someone please assist us with this?

Version (include the version you are using, if applicable):