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Measures against spoofing emails, specifications for email encryption: What is DMARC?

Measures against spoofing emails, specifications for email encryption: What is DMARC?

Explicit processing notification and audit for SPF and DKIM authentication failures!

On our company website, we introduce measures against spoofing emails and the specifications for email encryption. "DMARC" (Domain-based Message Authentication, Reporting & Conformance) is an extension of existing email authentication mechanisms, SPF and DKIM, and is a protocol specification that provides email domain owners with the ability to prevent spoofed email sending. We will provide detailed information about the three major roles of DMARC in the related links. Please take a look. [Contents] ■ The sending domain specifies the policy for how to handle emails that violate SPF or DKIM ■ Detecting spoofed From addresses (DMARC Alignment) ■ Receiving reports necessary for email auditing *For more details, please refer to the related links. Feel free to contact us for more information.

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PowerDMARC Features: Hosted Service

PowerDMARC Features: Hosted Service

Instead of directly setting it in DNS, centrally manage various settings on the PowerDMARC portal site!

We would like to introduce the features of the email security service 'PowerDMARC' under MENAInfoSec in the United States. The "hosting service" allows for centralized management from the portal's settings screen by referencing the values on the PowerDMARC side using CNAME, rather than directly rewriting the values of the DNS resource records. Please feel free to contact us if you have any inquiries. 【Features】 ■PowerSPF ■Hosted DKIM ■Hosted DMARC ■PowerBIMI ■PowerMTA-STS *For more details, please refer to the PDF document or feel free to contact us.

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How to set up DMARC in Office 365?

How to set up DMARC in Office 365?

What is missing from Office 365? A step-by-step guide introduced in the blog.

Microsoft is expanding support for email authentication protocols like DMARC across all email platforms. However, to fully leverage its benefits, it is essential to know how to correctly implement DMARC in Office 365. In recent years, many companies have transitioned to effective and robust cloud-based platforms and hosted email solutions like Office 365. Consequently, cybercriminals have upgraded their malicious techniques to cleverly manipulate the security solutions integrated into these platforms to carry out email fraud. This blog will explain how to set up DMARC in Office 365. [Overview (Partial)] ■ Why set up DMARC in Office 365? ■ Is DMARC really necessary if you are using Office 365? ■ How does DMARC function within Office 365? *For more details, you can view the blog through the related links. Please feel free to contact us for more information.

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[Blog] Is SPF necessary for subdomains?

[Blog] Is SPF necessary for subdomains?

SPF for each subdomain! We will introduce how to manage SPF for subdomains on the blog.

Unlike DMARC, SPF behaves differently for each subdomain. If you are unsure whether to set up SPF for your subdomains or whether to implement a separate (DMARC) policy for them, this article may be helpful. To summarize briefly, the DMARC policy of a domain is automatically applied to its subdomains. This means that if there is a DMARC record with p=reject published for company.com, emails sent from subdomains like support.company.com or marketing.company.com will inherit the same DMARC policy as the zone apex domain, so there is no need to manually configure individual sp (subdomain policy) DMARC tags. [Overview] ■ How does SPF work with subdomains? ■ Creating SPF records for subdomains ■ Why do subdomains (and domains) need SPF? ■ What is an SPF record? *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.

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[Blog] Strengthening Security by Increasing the Bit Count of DKIM Keys

[Blog] Strengthening Security by Increasing the Bit Count of DKIM Keys

Together with SPF and DMARC, we have dramatically improved the email security systems of organizations around the world.

Due to the threats lurking on the internet, companies need to adopt strong authentication methods to prove their legitimacy. One common method is DKIM (DomainKeys Identified Mail). This is an email authentication technology that uses cryptographic keys to verify the sender's domain, and using DKIM confirms the sender's domain. In this article, we will introduce how to upgrade the DKIM key for Microsoft Office 365 Exchange Online from 1024 bits to 2048 bits. [Contents] ■ The importance of upgrading the length of DKIM keys ■ Manually upgrading DKIM keys using Exchange Online PowerShell *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.

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