What should I do if my IP address is listed in CBL?
Summary
What email marketers say10Marketer opinions
Email marketer from Email Geeks Forum warns that if using a shared IP, the actions of other users can affect your IP's reputation. Consider switching to a dedicated IP to have more control over your sending reputation.
Email marketer from Reddit shares that the immediate action should be to stop all outgoing email traffic from the affected IP. Investigate the source of the malicious activity and secure the system to prevent further issues.
Email marketer from Email Warmup Blog suggests that once delisted and the underlying issues are resolved, gradually warm up the IP address. This involves slowly increasing sending volume and monitoring deliverability rates to ensure a positive reputation.
Email marketer from Security Blog emphasizes implementing robust security measures to prevent future infections. This includes firewalls, intrusion detection systems, and regular security audits.
Email marketer from Tech Forum explains that a thorough malware scan of all systems using the listed IP is crucial. Identify and remove any infections, and patch any vulnerabilities that may have been exploited.
Email marketer from MailCleaner Blog emphasizes implementing SPF, DKIM, and DMARC records to authenticate your emails. This helps improve deliverability and reduces the likelihood of being listed on blocklists.
Email marketer from Anti-Spam Blog recommends using blocklist lookup tools to check if your IP is listed on multiple blocklists, including the CBL. This provides a comprehensive view of your IP's reputation.
Email marketer from Email Marketing Forum recommends contacting your ISP or hosting provider immediately. They can assist in identifying the source of the problem and provide guidance on resolving the issue.
Email marketer from Deliverability Tips Website suggests checking for open relays on your mail server. Securing your mail server prevents spammers from using it to send malicious emails.
Email marketer from DNS Forum explains that ensuring your IP has a valid PTR record that matches your sending domain is crucial. This helps establish credibility and reduce the likelihood of being listed.
What the experts say4Expert opinions
Expert from Spam Resource emphasizes the critical need to identify and remove the malware infection that caused the CBL listing. Focus on securing the compromised system or network to prevent further abuse.
Expert from Email Geeks explains that an IP address listed in CBL is likely infected and sending out hostile mail and suggests following the instructions on the CBL page to secure the network.
Expert from Word to the Wise shares insights into understanding the nuances of different blocklists and their listing criteria is important. The CBL focuses on malware and botnet activity, requiring a different approach than spam-focused blocklists.
Expert from Email Geeks clarifies that CBL primarily lists IPs infected with malware. Addressing the security of the listed IP should be the first priority if a CBL listing is found.
What the documentation says4Technical articles
Documentation from CBL Website explains that to delist, the cause of the listing must be resolved. The listed IP must be cleaned of any malicious activity, and then the delisting process can be initiated through their website.
Documentation from Spamhaus Website explains that the first step is identifying why the IP was listed and resolving the underlying issue. Then, follow the removal instructions specific to the Spamhaus list the IP is on.
Documentation from Barracuda Networks explains that to delist from the BRBL, you need to determine the reason for listing (usually spam activity) and correct the problem. Then, you can request delisting through their website, but repeated listings indicate a persistent problem.
Documentation from CBL Website explains that IPs are listed on the CBL primarily because they have been detected sending malware, acting as command and control servers, or exhibiting botnet-like behavior.