Bounces related to Spamhaus SBL/XBL database listings are caused by a combination of factors including poor sending practices, compromised servers, recipient server issues, and spam complaints. Troubleshooting involves identifying the root cause of the listing, securing the sending server, improving list hygiene, implementing email authentication (SPF, DKIM, DMARC), and following Spamhaus's delisting process. Proactive reputation management, monitoring, and maintaining engaged subscribers are also crucial for avoiding blocklists.
8 marketer opinions
Spamhaus SBL/XBL listings leading to bounces are often caused by poor sending practices, compromised servers, or outdated data. Troubleshooting involves identifying the root cause (compromised accounts, vulnerable scripts, spam complaints), securing the server, improving list hygiene, authenticating email, and following Spamhaus's delisting process. Proactive reputation management and monitoring are also crucial.
Marketer view
Email marketer from StackOverflow explains that to get delisted from Spamhaus, you must first resolve the issue causing the listing. Then, follow Spamhaus's delisting process, which may involve submitting a request and providing evidence of remediation.
16 Mar 2023 - StackOverflow
Marketer view
Email marketer from Sendinblue explains that Spamhaus listings can cause hard bounces. They advise implementing proper list hygiene, removing inactive subscribers, and ensuring recipients have explicitly opted-in to receive emails.
10 Jul 2024 - Sendinblue
6 expert opinions
Bounces related to Spamhaus SBL/XBL listings can stem from several factors including: badly configured servers, stale blocklist data on the recipient side, and spam complaints. Addressing these issues requires proactive reputation management, ensuring proper blocklist implementation, and focusing on acquiring engaged subscribers. Checking that rejection messages include the correct TXT record is important, and monitoring IP and domain reputation helps to identify and resolve problems quickly.
Expert view
Expert from Email Geeks shares that over the last few months, Spamhaus has been turning off open resolver access. Some badly configured servers are incorrectly blocking mail. If the IPs aren’t listed at Spamhaus, that’s likely the problem. These domains are likely not getting much of their mail, so they’re unlikely to be important for either the recipient or the senders.
22 Jan 2025 - Email Geeks
Expert view
Expert from Email Geeks explains that if the rejection message doesn’t include the TXT record from blocklist lookup, one should think twice about whether it’s correctly implemented. In the case of Spamhaus that includes a URL.
7 Feb 2025 - Email Geeks
6 technical articles
Bounces from Spamhaus SBL/XBL listings typically indicate that your IP address has been flagged for spamming, malicious activity, or being infected with malware. Troubleshooting involves identifying and resolving the cause (e.g., compromised accounts, vulnerable scripts), securing your server, and following Spamhaus's delisting procedure. Implementing SPF and DKIM records helps prevent emails from being flagged as spam.
Technical article
Documentation from cPanel explains that using SPF and DKIM records helps prevent your emails from being flagged as spam, reducing the likelihood of bounces related to blocklists like Spamhaus. They provide instructions on how to configure these records in cPanel.
5 Jan 2023 - cPanel Documentation
Technical article
Documentation from Postfix explains that correctly configuring SPF (Sender Policy Framework) records is crucial for email authentication and preventing your emails from being marked as spam. It provides guidance on creating and implementing SPF records for Postfix mail servers.
9 Aug 2023 - Postfix
Besides Spamhaus, what blocklists are important for email marketers to monitor?
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How can I get delisted from Spamhaus?
How can I get help with a Spamhaus listing delisting?
How can I report fraudulent emails and domains to Spamhaus and other relevant organizations?
How do I check Spamhaus for my IP address and understand the listings?