Blog Post Mortem

Post Mortem

How to Filter Emails Without Violating Privacy: A GDPR-Safe Approach for Hosts and ESPs

Introduction Filtering outbound email is essential for stopping spam, phishing, and abuse. But if your filtering practices inspect message content or metadata, are you violating your users’ privacy? In a...

Using SMTP Relay to Isolate and Protect Sending IPs

In shared hosting environments, one bad sender can ruin it for everyone. A single compromised account sending spam can lead to blacklisted IPs, delivery failures, and angry customers wondering why...

Using SMTP Relay Services To Isolate & Protect IPs

Understanding GDPR and Email Processing: What Web Hosts and ESPs Need to Know

Introduction With the rise in outbound spam filtering and automated abuse detection, email service providers (ESPs) and web hosts face a critical question: How does GDPR apply to email processing—especially...

How Signup Abuse Impacts IP Reputation

Signup abuse doesn’t just affect a single hosting account—it can poison your entire IP range. When malicious users create accounts to send spam, phish, or host malware, the consequences ripple...

Automating Abuse Responses with AbuseAPI or Custom Scripts

Email abuse is no longer a problem you can afford to handle manually. In hosting environments—especially shared or reseller hosting—abuse can escalate in seconds, damaging your IP reputation and impacting...

Using Behavior Analytics to Detect Abuse Patterns

Modern spam and email abuse tactics are increasingly difficult to detect using static rules alone. Attackers now use clean IPs, mimic normal user activity, and automate around basic filters. To...

Signup Abuse in Reseller Hosting: Risks and Remedies

Reseller hosting environments are uniquely vulnerable to signup abuse. With multiple layers of account ownership and limited oversight across customers, attackers often exploit this complexity to register fake accounts, send...

Preventing Spam from New Accounts

Newly created accounts pose one of the highest risks for outbound spam in hosting environments. Even with strong signup defenses in place, some fake or malicious users will make it...

Detecting and Disabling Fake or Abusive Accounts

Fake and abusive accounts are a persistent problem in shared hosting environments. They often look harmless at signup but quickly become a source of spam, phishing, malware hosting, or resource...

Blocking Known Bad Actors at Signup

In the battle against spam, phishing, and scripted email abuse, prevention starts before the account is even created. While captchas and rate limiting stop generic bots, savvy attackers often slip...

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