The recipient's storage is full. The server will keep retrying for a while.
Soft bounce · temporary
Common causes
- Recipient mailbox over quota
How to fix it
- Wait for retries
- Remove the address if it is consistently full over weeks
Bounce ExplainerRun the right check for your domain or paste the full bounce message for a precise explanation.
Open Bounce Explainer →Frequently asked questions
Why do some servers use 452 and others 552 for a full mailbox?
It is the server's choice: 452 says "try later", 552 gives up immediately.