Intelligentes Greylisting mit NoSpamProxy 800x800

Intelligent greylisting with NoSpamProxy

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Every day, millions of unwanted emails are sent over the internet. Spam filters do their best to block these emails, but some unwanted messages still find their way into our inboxes. There is a frequently overlooked but effective protective measure against spam: greylisting. The principle behind greylisting is to save time. With greylisting, emails are initially rejected and only accepted after a second delivery attempt. In addition, greylisting separates legitimate mail servers from those that do not comply with the relevant RFCs.

In this article, you will learn how greylisting works, why it is still an integral part of modern spam protection today, and why the intelligent greylisting in NoSpamProxy is particularly effective.

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Das elektronische Gerichts- und Verwaltungspostfach EGVP 800x800

Using the Electronic Court and Administration Mailbox (EGVP) with NoSpamProxy

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Digitization has also led to fundamental changes in the legal and administrative sectors. One of the most important developments was the introduction of the Electronic Court and Administration Mailbox (EGVP), which enabled the secure exchange of documents between citizens, companies, lawyers, authorities, and courts. The EGVP has since been replaced by specialized electronic mailboxes such as beA, beN, beBPo, beSt, and eBO—each with a clearly defined scope of application. The following overview shows the development from the original EGVP to today’s solutions and explains how they work in practice.

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Phishing mit gefaelschten Autokatalogen 800x800

Phishing with fake automobile brochures

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The used car trade is booming like never before—especially online. The multitude of platforms and digital marketplaces makes business easier, but also attracts criminals. Prospective buyers are always potential targets for fraudsters who use increasingly sophisticated scams to try to obtain money or sensitive data. One particularly dangerous scam is phishing with fake car catalogs. Victims receive seemingly professional offers in the mail, but these are actually the work of organized cybercriminals.

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VS-NfD Verschlusssache nur für den Dienstgebrauch 1200x627

VS-NfD and email security: What IT administrators need to know

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The term VS-NfD is often used in connection with the secure handling of sensitive information in government agencies and companies. In our blog article, you will learn what VS-NfD is, why knowledge of it can be essential for your IT security, and how NoSpamProxy can also protect your organization.

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E-Mail-Penetrationstest: Wie steht es um Ihre Mail Security? Preview

Email penetration tests: How secure is your email security?

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Email remains the number one gateway for cyberattacks. Whether phishing, malware, or targeted manipulation—the threats are constantly evolving. This makes it all the more important for companies to regularly review their email security. Email penetration tests are an effective way to do this. They simulate real attack scenarios and uncover vulnerabilities. This gives organizations a clear assessment of how resilient their communications infrastructure really is – and where urgent improvements are needed.

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Sandbox erklärt: Warum sie in der modernen Email Security unverzichtbar ist Preview

Sandbox explained: Why it is indispensable in modern email security

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Cybercriminals are using increasingly sophisticated methods to attack companies and individuals via email. They often cleverly disguise their threats in seemingly harmless attachments or links. Conventional virus scanners are increasingly reaching their limits, as new, unknown malware can slip past them. This is where the concept of sandboxing comes in. Suspicious email content is executed in an isolated, virtual test environment so that even unknown attacks can be detected and repelled before they cause damage. In this blog article, you will learn how sandboxing works as an integral part of modern email security strategies, why it is indispensable in times of zero-day threats, and how the 32Guards Sandbox can provide you with lasting protection.

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Time-of-Click Protection – with the URL Safeguard in NoSpamProxy

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One of the most dangerous tactics used in cyber attacks is to send seemingly harmless links in emails that only lead to phishing sites or malware after they have been received. Traditional spam filters and virus scanners quickly reach their limits here, as they only check emails once when they are received. But what happens if the link later becomes dangerous? This is exactly where Time-of-Click Protection (ToC Protection) comes in. In this article, we show you how Time-of-Click Protection works, why it is indispensable for companies, and how it is integrated into URL Safeguard in NoSpamProxy.

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