Mail relays – Part 2 | Problems with forwarded mail?
Forwarded mail can be more trouble than it’s worth - especially when it’s done without checks, validation, or spam filtering. Typos, spamtraps, and forged senders can quickly snowball into blocklistings and delivery failures. In this second part on mail relays, we dive into the mess forwarding can cause, and what ... Read More
Mail relays – Part 1 | Authenticate your outgoing mail!
Email authentication used to be something only big players worried about. Not anymore. While small senders may not feel the heat yet, it’s only a matter of time before it reaches them. In this blog, we explore how authentication can be implemented at the relay level to improve deliverability, prevent ... Read More
Abuse takes its “toll” on .top: But who is paying the price?
Despite ICANN issuing a formal notice to .top citing a breach of contract for failing to address DNS abuse, the situation has not improved. Over the last six months, abuse of .top hasn’t just persisted, it’s gotten 50% worse! So, why is this happening, and what can be done to ... Read More
Domain Reputation Update Oct 2024 – Mar 2025
New domains are up 7.39%, with 2.9 million malicious domains detected. Chinese gambling sites dominate the Top 20 TLDs, while .top remains a hotspot for abuse - this time with a spike in toll road scams. Read the full report here ... Read More
Query the legacy DNSBLs via Microsoft? Move to Spamhaus Technology’s free Data Query Service
If you're using the free legacy DNS Blocklists (DNSBLs) through the Public Mirrors while running on Microsoft’s infrastructure, you'll need to make a few small adjustments to your email setup. These changes are simple to apply, but if you don’t take action, you risk having some - or even all ... Read More
Networks hosting botnet C&Cs: Same players, same problems
With every Botnet Threat Update we publish, the same networks consistently appear in the Top 20 for hosting botnet command and control (C&C) servers. But why does this keep happening? In this Botnet Spotlight, we look into the root causes behind this persistent issue and what networks must do to ... Read More
Botnet Threat Update July to December 2024
Overall botnet command control (C&C) activity decreased marginally by -4% between July and December last year. China dominated the Top 20 charts with increased botnet C&C activity across domain registrars and networks, ranking #1 globally for hosting botnet C&C servers. Download the latest report to learn more ... Read More
If you query the legacy DNSBLs via Hetzner move to Spamhaus Technology’s free Data Query Service
Currently accessing the free legacy DNS Blocklists (DNSBLs) via the Public Mirrors, and using Hetzner's network? You'll need to make some minor changes to your email infrastructure. The changes are simple to implement, but if you fail to do so, you could find that at some point post-February 19th 2024, ... Read More
Truffe via PEC – Far perdere tempo e denaro alle aziende italiane
In questo articolo condividiamo un caso dove dei criminali hanno utilizzato delle credenziali rubate ad un ignaro imprenditore per spedire centinaia di PEC malevoli ad altrettanto ignari altri utilizzatori di PEC, causando un notevole dispendio di tempo e denaro, ed analizziamo i rischi della proposta portata avanti dalla UE per ... Read More
PEC “invoice scam” – Stealing time, money, and trust from businesses
PEC stands for “Posta Elettronica Certificata” - a type of legally binding “certified email” used in Italy. It's also a hub of abuse targeting business owners. In this article, we share a real-life case of criminals stealing PEC credentials to send malicious emails, causing significant loss of time and money, ... Read More
