Email Security Blog

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What is MTA-STS

MTA-STS explained

Google recently announced that they made email more secure by adopting the new MTA-STS internet standard. But what is MTA-STS and how does it (somewhat) …

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Recent Email Security Posts

3 Spear Phishing Techniques

Since spear phishing can be so difficult to spot, it’s important to be well-versed in the various types of this attack method and continuously be on the lookout for any …

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What is DMARC?

DMARC stands for Domain-based Message Authentication, Reporting and Conformance. It in fact sits on top of SPF and DKIM. What DMARC brings to the table is the ability control, test …

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What is SPF?

What is SPF?

The Sender Policy Framework (SPF) is an email-authentication technique which is used to prevent spammers from sending messages on behalf of your domain. With SPF an organization can publish authorized …

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What is DKIM?

What is DKIM?

DomainKeys Identified Mail (DKIM) is the most complicated email authentication protocol out there. Even if you do extensive research, it’s hard to find one place that describes how it all …

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