Gmail detected an unusual rate of mail from your IP or domain that looks unsolicited and is temporarily limiting it.
Soft bounce · temporary
Common causes
- A sudden spike in volume
- High complaint rates or many messages going to spam
- Sending to old or purchased lists
How to fix it
- Reduce volume and send only to people who opted in
- Check your spam rate in Google Postmaster Tools (keep it well below 0.3%)
- Remove inactive and invalid recipients
IP / Domain ReputationRun the right check for your domain or paste the full bounce message for a precise explanation.
Open IP / Domain Reputation →Frequently asked questions
How long does a Gmail 4.7.28 block last?
It eases as your sending pattern and complaint rate improve; there is no manual removal.