Overview
A bounced email is one the recipient’s server rejected and returned. Gmail bounces usually explain why in the returned message — a wrong address, a full inbox, or spam filtering. This guide helps you read the bounce and fix delivery.
Key Takeaways
- Bounce messages contain an error code explaining the rejection.
- Common causes are wrong addresses, full mailboxes, and spam filters.
- Sender authentication (SPF, DKIM, DMARC) affects deliverability.
- The bounce text tells you whether the problem is temporary or permanent.
Read the Bounce Message
1. Open the bounce email Gmail returned to you.
2. Find the error code and description, such as address not found or message blocked.
3. Note whether it is a permanent (5xx) or temporary (4xx) error.
4. Act based on the specific reason given.
Fix Common Causes
1. Correct any typo in the recipient’s address and resend.
2. If the mailbox is full or the error is temporary, wait and try again later.
3. If messages are blocked as spam, set up SPF, DKIM, and DMARC for your sending domain.
4. Remove links or attachments that may trigger filters, and avoid spam-like content.
Tip: For bulk or business sending, correct SPF, DKIM, and DMARC records are the single biggest factor in avoiding spam rejections.
Troubleshooting
Problem: Address not found errors.
Solution: Verify the exact spelling of the recipient address and confirm it still exists.
Problem: Messages are blocked as spam.
Solution: Configure SPF, DKIM, and DMARC for your domain and avoid spammy content and links.
Problem: Temporary failure messages.
Solution: These often clear on their own; wait and resend, as the recipient server may be busy or the mailbox full.
Problem: All mail to one domain bounces.
Solution: Your sending IP or domain may be blocklisted; check blocklists and contact the recipient’s administrator.
Conclusion
Bounce messages tell you exactly why an email failed. Fix the address, wait out temporary errors, and set up proper authentication to keep your Gmail messages landing in inboxes.
About TechHub
This guide is part of the TechHub Knowledge Base. For more step-by-step IT guides and support, visit techhub.com.lk.
