Learning to find the source owner using the ‘envelope_to’ domain
An ‘envelope_to’ domain is the domain in the recipient’s email address. This address can be used to understand how some of the legitimate emails are failing DMARC checks. If you are unsure about the troubleshooting methods, using the ‘envelope_to’ domain to find the source owner is a wise choice. Using this technique, you get to…
RFC 5322 laid down email security specifications for Sender Policy Framework
RFC 5322 defines the syntax for Internet email headers. SPF, DKIM, and DMARC rely on these headers to authenticate emails and prevent phishing. Published in October 2008 as an update to RFC 2822, RFC 5322 is widely used for formatting email headers and bodies. RFC 5322 doesn’t say anything about how SPF should be set…
What is a DKIM signature, and how does it help filter emails?
If you run a business in 2025, then email authentication is something that you must take seriously. With around a 341% increase in malicious emails, it’s no longer about the flexibility to focus on cybersecurity; it’s a necessity now. To make things worse, Gen AI models with no guardrails are offering swift answers to malicious…
Yahoo Japan rings in the new year with DMARC adoption
It’s 2025, and email authentication is more than just a ‘good-to-have’ aspect for any organization trying to thrive in this digital world riddled with cyberattacks! Not only organizations but even email service providers recognize this and understand the importance of implementing security measures to protect their users from phishing, spoofing, and domain impersonation. Perhaps this…
