What are the best and most trustworthy URL RBLs?

Experts and marketers agree that Spamhaus is a highly reputable and accurate RBL for blocking spam. Spamhaus DBL, SURBL, and URIBL are often recommended together for comprehensive coverage. It's important to choose reputable RBLs to avoid false positives. URIBLs are especially useful for detecting malicious URLs in emails. Monitoring RBL listings is crucial for maintaining deliverability. To avoid being listed, ensure proper email authentication (SPF, DKIM, DMARC), maintain clean lists, engage subscribers, use double opt-in, and segment lists. While testing RBLs is possible, it can harm sender reputation. PhishTank's trustworthiness is questioned due to potential manipulation.

Experts and marketers agree that Spamhaus is highly reputable and accurate for blocking spam. Using multiple RBLs like Spamhaus, SURBL, and URIBL can improve spam detection but choosing trustworthy RBLs is crucial to avoid false positives. URIBLs are beneficial for detecting malicious URLs. Monitoring RBL listings is essential to prevent blacklisting and using tools like MXToolbox and HetrixTools can aid in this. To avoid listing, send emails to engaged subscribers, use double opt-in, and segment lists. Testing RBLs can be done but carries a risk to reputation.

Experts recommend Spamhaus DBL, SURBL, and URIBL as good URL RBLs, with Spamhaus being particularly well-respected for its accuracy. PhishTank is considered less trustworthy due to potential manipulation by community voters. Spamhaus and SURBL provide good coverage and accuracy.

The Spamhaus DBL is a real-time database blocking domains involved in malicious activities. SURBL lists websites appearing in unsolicited messages and detects those used for spam or phishing. URIBL identifies abusive URIs in unsolicited emails. Compliance with email best practices, including authentication (SPF, DKIM, DMARC), clean lists, and addressing complaints, can help avoid listing.