Barracuda — Check, Delist & Monitor
Check if you're listed on Barracuda BRBL. Manual removal via the BRBL form, typically processed within 12-24 hours. Monitor your IP reputation automatically.
Impact & Usage
Widely used by enterprise email gateways and Barracuda security appliances. Being listed here blocks mail to many corporate recipients.
Typical users: Organizations using Barracuda Spam & Virus Firewall and security appliances; limited reach beyond Barracuda ecosystem
What Gets You Listed
Automated detection of open proxies, botnets, spam to trap addresses, and improper mail server configuration; manually verified by Barracuda Central
How to Get Delisted
- Check your listing status at barracudacentral.org/lookups by entering your IP address.
- Identify and fix the root cause — open relays, compromised servers, and missing rDNS are the most common triggers.
- Submit a removal request at barracudacentral.org/rbl/removal-request. Include a description of the issue and the steps you took to resolve it.
- Wait 12-24 hours for Barracuda to process the request, then verify removal with mxio Blacklist Check.
Expected Timeline
12-24 hours (manual request)
Auto-delist: No automatic delisting; submit removal request via BRBL form, typically honored within 12-24 hours with valid explanation
Common Causes
- Open relay or open proxy allowing unauthorized mail to pass through your server
- Compromised server or account sending spam to Barracuda spamtrap addresses
- Missing or incorrect reverse DNS (PTR) record for the sending IP
- Sudden large volume increase from an IP with no established sending history
Prevention Tips
- Ensure your mail server is not configured as an open relay — test regularly with external relay checkers
- Maintain valid forward-confirmed reverse DNS (FCrDNS) for all sending IPs
- Keep mail server software patched and monitor for signs of compromise
- Warm up new sending IPs gradually rather than blasting full volume immediately
Overview
Barracuda Reputation Block List (BRBL) is maintained by Barracuda Networks and is one of the more impactful commercial blacklists. Its reach extends well beyond the Barracuda product ecosystem — many enterprise mail gateways, spam filters, and hosted email security services reference BRBL as part of their inbound filtering. A listing here typically means your mail is being rejected at corporate mail servers, which makes it especially damaging for B2B senders.
Unlike SpamCop, Barracuda does not auto-delist. You must submit a manual removal request through the BRBL form at barracudacentral.org, explaining what caused the listing and what you did to fix it. Removal requests without a credible explanation are likely to be denied or delayed. Barracuda's team reviews requests and typically processes them within 12-24 hours.
The most common causes are open relays, compromised servers, and IPs with no reverse DNS. Barracuda's detection uses a combination of spamtrap data, automated scans for server misconfiguration, and manual verification. If your IP is listed, it usually means something is genuinely misconfigured — Barracuda false positives are relatively rare compared to other lists.
For organizations that rely on email to reach enterprise customers, a Barracuda listing should be treated as high priority. Fix the root cause first, then request removal with documentation of what changed.
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