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Enabling DANE and DNSSEC for Office 365 Exchange Online

Exchange Online and DNSSEC Support for a Safer Cloud
As cloud computing continues to become more and more popular, organizations are increasingly turning to cloud solutions for their Exchange services. Exchange Online from Microsoft is a leader in the market, providing a secure, reliable, and cost-effective platform for organizations to host their email services. The Exchange Online team is constantly innovating and striving to provide the most secure platform possible for organizations to host their email, and one of the latest enhancements is the support for Domain Name System Security Extensions (DNSSEC).

What is DNSSEC?
DNSSEC is an internet protocol designed to secure the Domain Name System (DNS). It is an extension of the DNS protocol, and it provides an additional layer of security to your domain by authenticating DNS requests. It does this by verifying that the response to a DNS request is coming from the correct location, and that the response is unaltered. This helps to protect against man-in-the-middle attacks and other types of malicious activity.

How Does DNSSEC Work?
DNSSEC uses digital signatures to sign DNS records. When a DNS request is made, the DNS server checks the digital signature to ensure that the response is from the correct source and hasn’t been modified. If the signature is valid, the DNS request is processed. If not, the request is rejected.

What Are the Benefits of DNSSEC?
The primary benefit of DNSSEC is that it provides an additional layer of security for your domain. It helps to protect against man-in-the-middle attacks, which can allow malicious actors to intercept and modify DNS requests. It also helps to protect against cache poisoning, which can be used to redirect traffic to malicious websites. In addition, DNSSEC can help to reduce the risk of DNS hijacking, which can be used to hijack domains and redirect traffic to malicious sites.

How Does Exchange Online Support DNSSEC?
Exchange Online supports the use of DNSSEC to help protect your domain. When you configure your domain to use DNSSEC, Exchange Online will validate the digital signatures of DNS requests and reject any requests that are not signed or are signed incorrectly. This helps to ensure that your domain is protected from malicious activity.

Conclusion
DNSSEC is an important security protocol for protecting domains from malicious actors. Exchange Online supports the use of DNSSEC to help protect your domain and keep it secure. By configuring your domain to use DNSSEC, you can ensure that your domain is protected from man-in-the-middle attacks, cache poisoning, and DNS hijacking.
References:
Support of DANE and DNSSEC in Office 365 Exchange Online

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