Outgoing email cannot be sent

Error Message

553 5.7.1 <info@meine-domain.de>: Sender address rejected: not owned by user username@mai.out.creoline.de

Cause

This error occurs when a domain is used as the sender email address that does not have sending permissions for this Send Connector.

Solution

The domain of the sender’s email address must be added to the list of authorized domains.

For detailed step-by-step instructions, see the article Send Connectors.

Which sender email addresses can I use?

One of the authorized domains must be used for outgoing email. Additionally, ownership must be successfully verified.