In SPF, a DNS lookup is the process using which the receiving mail server fetches the SPF TXT record of the sender’s domain. This is done to verify if the sender is authorized to send messages on behalf of the domain owner. However, to prevent abuse and overburdening, RFC has imposed a limit of a…
SPF prevents emails sent by unauthorized people from landing in the inboxes of targeted recipients. However, if your SPF record is misconfigured, it can do more harm than good- especially if it’s overly permissive. By overly permissive, we mean using the +all mechanism, as this setting can turn your domain into an open relay for…
We know that email is one of the most crucial aspects of your business communication, but we hate to break it to you; it’s also the most vulnerable one. Why do we say that, you ask? Cybercriminals see emails as the easiest entry points and then intercept them, add something fishy or alter their content,…
Back in the days when SMTP (Simple Mail Transfer Protocol) was designed, it lacked any authentication techniques. Over time, threat actors started misusing email communication channels as they were only protected by passwords, which are easy to breach. As emails became one of the common attack vectors, companies felt the need to devise a solution…
Has it ever happened to you that you sent an email, but it never reached the recipient despite doing everything right? You authenticated your email-sending domain with SPF, DKIM, and DMARC, but somehow, your emails aren’t getting through. Well, one of the reasons behind this could be that your authentication protocols aren’t correctly configured, particularly…
Email security has seen many developments over the years. Starting in February 2024, Google and Yahoo made it mandatory for bulk senders to implement SPF, DKIM, and DMARC to combat the growing menaces attempted through phishing and spoofing. Now, Yahoo Japan has also taken a step further in the same direction— it has made it…
DORA (Digital Operational Resilience Act) is a Europe-based framework explicitly designed to establish regulatory compliance for the finance sector. This act has been in force since January 2025. Though DORA and DMARC are not directly linked with each other, DMARC helps in DORA compliance by improving the email security posture. DMARC is an email authentication…
You would be surprised to know that as many as 3.4 billion emails are sent by threat actors every single day around the globe to gain illegitimate access to sensitive user data. That’s precisely why email authentication plays a significant role in safeguarding your business email communications by securing your domain from phishing and spoofing…
It’s common for legitimate emails to be falsely marked as spam or rejected because they failed the SPF verification checks. While this is not a one-off occurrence, it does leave room for missed conversations, which can lead to reputational and financial damages. SPF is a strong tool against phishing and spoofing emails sent from your…
SPF is the email authentication protocol that allows domain owners to specify which mail servers they officially allow to be used to send emails on behalf of a domain. Wildcarding in SPF is done using the ‘*’ mechanism. It matches any domain or IP that doesn’t explicitly match other mechanisms in the record. Wildcarding usually…
