Email troubleshooting guides
Barracuda Email Gateway Defense setup guides, organized by problem
Browse DNS and sender-authentication setup guides for Barracuda Email Gateway Defense.
Choose the article that matches the provider, record type, or exact error shown in your mail logs.
Search troubleshooting guides
Find a guide by SMTP code, provider, or words from the error message.
Enter at least two characters.
Barracuda Email Gateway Defense: inbound mail bypasses the gatewayFix inbound mail that bypasses Barracuda Email Gateway Defense or stops after an MX change.
Barracuda Email Gateway Defense: SPF fails for outbound mailFix SPF failure when Barracuda Email Gateway Defense sends outbound mail for your domain.
Primary sources: Primary technical reference.