blocklist
Spamhaus Releases Sender Guidelines
While dozens of blocklists have faded into history or irrelevance over the past 25+ years, Spamhaus remains the heavyweight when it comes to...
Topic
dnsbl
2025
Does Spamhaus matter today?
Short answer: Yes. Longer answer: Still yes, and here's why. Spamhaus. If you're in the business of sending email, you've probab...
blacklists
Spamhaus blocking queries from Digital Ocean Cloud servers
As part of their continuing efforts to lock down unrestricted public access to their reputation data, Spamhaus has announced that as of Febr...
blocklist
Spamhaus: The return of the ASN-DROP
Spamhaus just announced that they've "reinvigorated" the ASN-DROP list , now available in JSON format. The point of this whole...
dns
Spamhaus is not blocking Gmail
A friend warned me of a scenario that could have the potential to freak people out, if misunderstood. It looks like this: This person is usi...
abusix
Abusix: 8 ways on how ESPs and DNSBL providers can collaborate better
Steve Freegard, Sr. Product Owner Abusix Intelligence recently shared his thoughts on how ESPs can better position themselves with regard to...
dnsbl
Spamhaus updates lookup tool
Anti-spam group Spamhaus, publishers of various widely-used blocking lists (including the SBL), has recently updated their blocking list loo...
dnsbl
Spamcop glitch over the weekend; since fixed
The Cisco-owned Spamcop.net spam reporting and blocking list service ran into a bit of trouble this weekend as their "spamcop.net...
dead dnsbls
Lashback UBL blocklist: OFFLINE
LashBack's unsubscribe blacklist (" UBL "), as described by its publisher "is a unique, real-time blacklist of IP address...
blocklists
Need simple DNSBL/blocking list tracking?
If you need simple DNSBL blocking list (or blacklist) tracking, here's a couple of services that both seem to work well: Debouncer and ...
blocklists
Dead DNSBLs: all.rbl.webiron.net and bsb.spamlookup.net
Two anti-spam blocking lists appear to have died or malfunctioned recently. Users on the Mailop mailing list are reporting that Webiron (al...
cloudflare
Spamhaus Blocklist Changes
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 ...
dead dnsbls
Whoops! Cyberlogic DNSBL Broken
Looks like the anti-spam blacklist at dnsbl.cyberlogic.net has listed the entire world. More info can be found here .
dnsbl
MegaRBL DNSBL FUBAR
Over on the Word to the Wise blog, Laura Atkins explains what happened with that spate of short-term MegaRBL DNSBL listings you may have no...
apews
Ask Al: Remove me from APEWS?
Andrej writes, "Hello, I would like to ask you to remove my IP address from APEWS.org blocklist. Thank you very much." Andrej, tha...
dead dnsbls
Another Dead DNSBL
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 mor...
dead dnsbls
RFC Ignorant Blacklist Shutting Down
One-time Yahoo administrator Derek Balling has announced that the RFC Ignorant blocking list is being shut down . This blocking list had ex...
box of meat
DNSBL Safety Report 5/14/2011
SpamTips.org, a website devoted to SpamAssassin Tips ( SpamAssassin being the wildly popular open-source spam filter) recently posted a wond...
dnsbl
Have you checked out NiX Spam?
Marcel Lohmann, one of the admins behind the NiX Spam DNSBL , reached out to me to ask me if I would review this DNSBL. I haven't publis...
best practices
How To (or How Not To) Operate a Blacklist
Today, Return Path posted a short but very helpful set of guidelines that one should keep in mind when operating a DNSBL anti-spam blacklist...