<div>
DMARC/SPF/DKIM all are designed to prevent email spoofing. I am not very clear with your question. However, if you keep your door open for everyone, no one can prevent you from email spoofing. As an admin, it is your responsibility to keep your door properly closed and allow, who are permitted to enter.
</div>


<div>
No response from asker. Question answered with appropriate documentation.
</div>


<div>
<div class="content wysiwyg-content">
My understanding with DMARC is it allows you to configure your DNS to instruct e-mail servers that receive e-mail from senders from YOUR domain/e-mail server on how to handle a failed DKIM or SPF. <br />
However, what if those recipient servers have their own e-mail gateway that is set to &quot;allow&quot; failed DKIM or failed SPF. <br />
Does the DNS rule at your domain win over the recipient's server's inbound rules?
</div>
</div>


My understanding with DMARC is it allows you to configure your DNS to instruct e-mail servers that receive e-mail from senders from YOUR domain/e-mail server on how to handle a failed DKIM or SPF. 
However, what if those recipient servers have their own e-mail gateway that is set to "allow" failed DKIM or failed SPF. 
Does the DNS rule at your domain win over the recipient's server's inbound rules?

DKIM/SPF/DMARC Question - order of rules for allow/reject?

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

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.