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This should give you the information you need to get DMARC working. Note that you need to have SPF and DKIM set up as well: <a href="https://www.dmarcanalyzer.com/dmarc/dmarc-record-setup-guides/office-365-dmarc-setup-guide/" rel="ugc">https://www.dmarcanalyzer.com/dmarc/dmarc-record-setup-guides/office-365-dmarc-setup-guide/</a>
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This should give you the information you need to get DMARC working. Note that you need to have SPF and DKIM set up as well: https://www.dmarcanalyzer.com/dmarc/dmarc-record-setup-guides/office-365-dmarc-setup-guide/ [https://www.dmarcanalyzer.com/dmarc/dmarc-record-setup-guides/office-365-dmarc-setup-guide/]

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Configure manually SPF, DKIM and DMARC to protect against spam: <a href="https://techblog.exonet.nl/2017-02-03-spf-dkim-dmarc" rel="ugc">https://techblog.exonet.nl/2017-02-03-spf-dkim-dmarc</a><br />
<br />
This is a good read for some tips and tricks to <a href="https://expert-advice.org/security/10-best-practices-to-avoid-email-phishing-attacks/" rel="ugc">avoid email attacks</a>
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Configure manually SPF, DKIM and DMARC to protect against spam: https://techblog.exonet.nl/2017-02-03-spf-dkim-dmarc [https://techblog.exonet.nl/2017-02-03-spf-dkim-dmarc]

This is a good read for some tips and tricks to avoid email attacks [https://expert-advice.org/security/10-best-practices-to-avoid-email-phishing-attacks/]

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Problem: prevent spoofing using our domain. &nbsp;<br />
<br />
Using: Office 365<br />
Also using: barracuda email security product<br />
<br />
Heard that dmarc will help prevent spoofing. &nbsp;Is this a simple but effective strategy? &nbsp;<br />
<br />
Can anyone tell me the steps to add a dmarc record to dns record, office 365? &nbsp;<br />
<br />
Thank you,<br />
<br />
GY
</div>
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Problem: prevent spoofing using our domain.  

Using: Office 365
Also using: barracuda email security product

Heard that dmarc will help prevent spoofing.  Is this a simple but effective strategy?  

Can anyone tell me the steps to add a dmarc record to dns record, office 365?  

Thank you,

GY

Email Spoofing Prevention, dmarc, office 365

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.