Short answer: Yes. Longer answer: Still yes, and here's why. Spamhaus. If you're in the business of sending email, you've probably heard the name. Maybe not as much lately. But that …
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Do blocklists matter? Are you going to have deliverability troubles if your sending IP address is on a blocklists? It's a complex question, as the nature of blocklists and th…
As part of their continuing efforts to lock down unrestricted public access to their reputation data, Spamhaus has announced that as of February 14, 2024, they'll be blocking…
Spamhaus just announced that they've "reinvigorated" the ASN-DROP list , now available in JSON format. The point of this whole thing is for network operators (think…
Hey, fellow email nerds! It's webinar time again. What do you know about Spamhaus ? If not everything, I hope you'll join Matthew Stith and myself on March 21st at 9:00 a…
This is a question I get a lot. Does Gmail use any blocklists? Or, somebody will tell me that they're having Gmail issues, and they've plugged their own IP address into a…
Hey, email nerds! Are you like me, running various random EC2 instances with scripts or applications that do a bunch of spam and email message analysis, checking (among other thi…
Timely! I just blogged recently talking about what you should do if you get blocklisted by Spamhaus , and now Spamhaus just posted this: Poor sending practices trigger a tidal w…
You'll recall me warning recently that using Spamhaus data to protect your mail server is a bad idea if you're using open or public DNS resolvers . TL;DR? Spamhaus is wor…
Do you use any of the Spamhaus blocking lists (DNSBLs) to protect yourself from inbound spam and email threats? If so, you're not alone. The Spamhaus data is quite popular an…
Steve Freegard, Sr. Product Owner Abusix Intelligence recently shared his thoughts on how ESPs can better position themselves with regard to blocking list (DNSBL) issues. He reco…
Anti-spam blocking list group Spamhaus is warning that come March 2021, they will begin implementation of new error codes (DNSBL lookup responses) that they may provide in respon…
The Cisco-owned Spamcop.net spam reporting and blocking list service ran into a bit of trouble this weekend as their "spamcop.net" domain name was allowed to expire. …
LashBack's unsubscribe blacklist (" UBL "), as described by its publisher "is a unique, real-time blacklist of IP addresses which have sent email to addresses …
If you need simple DNSBL blocking list (or blacklist) tracking, here's a couple of services that both seem to work well: Debouncer and RBL Tracker . Both are free if monitor…
Two anti-spam blocking lists appear to have died or malfunctioned recently. Users on the Mailop mailing list are reporting that Webiron (all.rbl.webiron.net) blocklist appears t…
Speaking of Spamhaus, this just popped up in my RSS feed reader. It looks like Spamhaus is going to take a harder stance against users who query their lists via open or public D…
It seems as though my website over at DNSBL.com has turned into a graveyard for dead DNSBLs. Over the past few years, I've observed more than a dozen blacklists go missing, …
One-time Yahoo administrator Derek Balling has announced that the RFC Ignorant blocking list is being shut down . This blocking list had existed since at least late 2001 . Its …
SpamTips.org, a website devoted to SpamAssassin Tips ( SpamAssassin being the wildly popular open-source spam filter) recently posted a wonderful DNSBL Safety Report , showing hi…
