Microsoft Announces Public Preview of Inbound SMTP DANE with DNSSEC for Exchange Online

July 17, 2024 Microsoft

Microsoft has recently announced the public preview of Inbound SMTP DANE with DNSSEC for Exchange Online, according to a blog post on its tech community website. This development is aimed at enhancing the security of email communication and is a significant step forward in combating email spoofing and phishing attacks.

DANE, or DNS-based Authentication of Named Entities, and DNSSEC, or Domain Name System Security Extensions, are protocols designed to secure certain types of online communication. They work together to protect the transfer of data and ensure that the involved parties are authentic.

Microsoft's implementation of these protocols for Exchange Online marks an important milestone in their ongoing commitment to enhancing email security. The public preview allows the tech community to test these features before they are officially rolled out, providing them with the opportunity to provide feedback and detect any potential issues.

This implementation of DANE and DNSSEC will help protect Exchange Online users from specific types of cyber threats. When DANE is used with DNSSEC, it can prevent man-in-the-middle attacks by ensuring that the communication is secure and that the entities involved in the communication are authentic.

Email spoofing and phishing attacks are common cyber threats where attackers impersonate a legitimate entity to trick users into revealing sensitive information. By utilizing DANE and DNSSEC, Microsoft can ensure that emails received on Exchange Online are from the entity they claim to be, reducing the risk of these types of attacks.

The public preview of Inbound SMTP DANE with DNSSEC for Exchange Online is currently available to all Exchange Online customers. Microsoft encourages users to provide feedback on this feature, which will help them refine and improve it before the official release.

Microsoft has also provided instructions for IT administrators on how to enable this feature on Exchange Online. The company stated in the blog post that this public preview would not affect customers who do not enable these protocols. However, they have recommended that all customers consider enabling DANE and DNSSEC, as they significantly improve email security.

In conclusion, the announcement of the public preview of Inbound SMTP DANE with DNSSEC for Exchange Online is a promising move by Microsoft towards enhancing email security. It is a testament to the company’s commitment to fortifying its defenses against email spoofing and phishing attacks. The move also aligns with wider industry efforts to bolster email security and protect users from increasingly sophisticated cyber threats.

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