What are the changes to the Spamhaus DBL and how will this affect email marketers?
Summary
What email marketers say11Marketer opinions
Email marketer from EmailVendorSelection states that the Spamhaus DBL change means increased scrutiny on individual sending practices. Marketers must ensure they are not engaging in activities that could lead to hostname blacklisting, like sending unsolicited emails or having poor list hygiene.
Email marketer from Gmass recommends double checking your email authentication is correct to ensure they are not impacted, this includes SPF, DKIM and DMARC records are configured correctly.
Email marketer from Email Marketing Forum explains that you should keep a close eye on changes to the DBL to ensure everything is correct and not impacting your current emails.
Email marketer from StackOverflow notes that the DBL changes might make marketers reconsider how they are using subdomains. Having separate subdomains for different email types, such as marketing vs. transactional, may become more important to isolate reputation risks.
Email marketer from Mailjet highlights the advantage of the Spamhaus DBL change, indicating that listing hostnames enables a more precise approach to blocking. Email marketers benefit from reduced false positives, as only the abusive subdomains or hosts are blocked instead of the entire domain, thus preserving legitimate email flow.
Email marketer from Email Geeks shares that while more granularity to handle subdomains is nice, it is still annoying when most subdomains are spammy and you can't ban the whole domain because of false positives.
Email marketer from Reddit notes that users of shared IP addresses must be more cautious as the actions of other senders on the same IP can impact their hostname reputation. Being listed on the Spamhaus DBL due to a neighbor's bad practices can directly affect deliverability, so monitoring is critical.
Email marketer from Automizy shares that you must frequently check the email list to ensure all the subscribers are correct and actually people who are engaged with the content. This avoids any chance of being flagged as Spam.
Email marketer from SendPulse advises marketers to maintain good email practices to avoid being listed on the Spamhaus DBL. This includes obtaining explicit consent from subscribers, providing easy unsubscribe options, and monitoring sending reputation. The changes require greater vigilance and adherence to best practices.
Email marketer from Email Geeks explains that the change to DBL is a lovely refinement allowing for more precision. It enables listing the specific abused machine instead of the whole domain. Currently, it's just for abused-legit stuff, but it may scale.
Email marketer from Litmus recommends closely monitoring deliverability metrics, such as inbox placement rates and bounce rates. The Spamhaus DBL change necessitates a more proactive approach to deliverability management, as issues with hostname reputation can quickly impact email performance.
What the experts say3Expert opinions
Expert from Spam Resource explains that Spamhaus listing hostnames in the DBL provides a more accurate way to identify and block spam sources. This reduces the risk of false positives where legitimate domains are blocked due to the actions of a few bad actors.
Expert from Email Geeks shares that Spamhaus is changing the DBL to list hostnames and not just domains.
Expert from Word to the Wise shares that email marketers need to pay closer attention to the reputation of their subdomains. With Spamhaus listing hostnames, a compromised subdomain can lead to deliverability issues even if the main domain has a good reputation.
What the documentation says5Technical articles
Documentation from Spamhaus explains that the DBL (Domain Block List) will now list individual hostnames in addition to domains. This provides greater precision in blocking spam sources, targeting the specific abusive host without penalizing the entire domain.
Documentation from Microsoft shares that they are constantly updating their connection filter policies to help prevent bulk email. It is important to use this to review all your emails and ensure they are getting through.
Documentation from URIBL shares that with Spamhaus listing hostnames, URL blacklists like URIBL will also need to adapt to accurately reflect hostname reputation. This means email marketers need to be even more careful about the links they include in their emails, as a compromised or blacklisted hostname can trigger filters.
Documentation from Talos Intelligence highlights the importance of monitoring hostname reputation, not just domain reputation. With Spamhaus listing hostnames, email marketers need to pay closer attention to the reputation of individual subdomains and sending hosts to prevent deliverability issues.
Documentation from RFC specifications indicate that email marketers should ensure proper reverse DNS (PTR) records are configured for their sending hostnames. A mismatch between the hostname and IP address can negatively impact reputation and increase the likelihood of being listed on the Spamhaus DBL.