2685423 - Sending Domains Gmail.com and Yahoo.com Not Supported

When adding sender domains gmail.com or yahoo.com the error message "To prevent the misuse of e-mail addresses, SAP only allows e-mails to be sent from domains that are owned by you" is shown.

SAP Hybris Cloud for Customer

1. Go to Business Configuration.
2. Go to view Overview.
3. Search for E-mail and Fax Settings.
4. Click the link for the activity.
5. On left side, see the Allowed Domains.
6. Enter gmail.com or yahoo.com
7. Save
8. Error is triggered

Sending the mails with sender address as gmail.com or yahoo.com is not supported in C4C tenants.
By doing thisour IP's and domain can get added to blocklist.

This is the system behavior.

KBA , AP-RC-OUT , Output Management , Problem