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Tag: Spamhaus

Spamhaus on ESPs

Promoted from yesterday’s comments, Spamhaus comments on my discussion of filtering companies getting tired of ESPs. You hit the nail square on, Laura. As Laura knows but many here might not, I am with the Spamhaus project. At one time I was leading efforts to clean up ESP spam. I am not deeply involved with […]

2 Comments

ROKSO

ROKSO is the Register of Known Spamming Operations. It is a list of groups that have been disconnected from more than 3 different networks for spamming. ROKSO is a little bit different than most of the Spamhaus lists. The listings themselves talk more about the background of the listees and less about the specific emails […]

3 Comments

Open relays

Spamhaus wrote about the return of open relays yesterday. What they’re seeing today matches what I see: there is fairly consistent abuse of open relays to send spam. As spam problems go it’s not as serious as compromised machines or abuse-tolerant ESPs / ISPs/ freemail providers – either in terms of volume or user inbox […]

2 Comments

ISP Relationships

Delivra has a new whitepaper written by Ken Magill talking about the value (or lack thereof) of relationships with ISPs. In Ken’s understated way, he calls baloney on ESPs that claim they have great delivery because they have good relationships with ISPs. He’s right. I get a lot of calls from potential clients and some […]

6 Comments

Spamhaus answers marketer questions

A few months ago, Ken Magill asked marketers, including the folks at Only Influencers to provide him with questions to pass along to Spamhaus. Spamhaus answered the first set in March, but then were hit with the Stophaus attack and put answering further questions on hold. Last week, they provided a second set of answers and this […]

1 Comment

Fake DNSBLs

Spamhaus recently announced a few years ago that they have discovered a company that is pirating various blocklists, relabeling them and selling access to them. Not only is the company distributing the zones, they’re also running a “pay to delist” scheme whereby senders are told if they pay money, they’ll be removed from the lists. […]

7 Comments

What is a dot-zero listing?

Some email blacklists focus solely on allowing their users to block mail from problematic sources. Others aim to reduce the amount of bad mail sent and prefer senders clean up their practices, rather than just blocking them wholesale. The Spamhaus SBL is one of the second type, using listings both to block mail permanently from […]

9 Comments

Arrest made in Spamhaus dDOS

According to a press release by the Openbaar Ministerie (the Public Prosecution Office), a dutch man with the initials SK has been arrested in Spain (English translation) for the dDOS attacks on Spamhaus. Authorities in Spain have searched the house where SK was staying and seized electronic devices including computers and mobile phones. Brian Krebs […]

2 Comments

Spamhaus answers about the recent DoS attack

Answers about recent DDoS attack on Spamhaus

No Comments

More on the attack against Spamhaus and how you can help

While much of the attack against Spamhaus has been mitigated and their services and websites are currently up, the attack is still ongoing.  This is the biggest denial of service attack in history, with as much as 300 gigabits per second hitting Spamhaus servers and their upstream links. This traffic is so massive, that it’s […]

2 Comments
  • AOL compromise

    Lots of reports today of a security problem at AOL where accounts are sending spam, or are being spoofed in spam runs or something. Details are hazy, but there seems to be quite a bit of noise surrounding this incident. AOL hasn't provided any information as of yet as to what is going on.4 Comments


  • ReturnPath on DMARC+Yahoo

    Over at ReturnPath Christine has an excellent non-technical summary of the DMARC+Yahoo situation, along with some solid recommendations for what actions you might take to avoid the operational problems it can cause.No Comments


  • AOL problems

    Lots of people are reporting ongoing (RTR:GE) messages from AOL today.  This indicates the AOL mail servers are having problems and can't accept mail. This has nothing to do with spam, filtering or malicious email. This is simply their servers aren't functioning as well as they should be and so AOL can't accept all the mail thrown at them. These types of blocks resolve themselves. 1 Comment


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