DMARC works in conjunction with SPF and DKIM. When an email reaches a service that does not find a properly configured SPF and/or DKIM record for the domain in question, DMARC provides instructions to telegram thailand viral the service on what to do with that email.
Three possibilities then arise:
either the service does nothing and distributes the message
either the service puts the email in SPAM
Here are the steps to follow to configure your DMARC:
Make sure your domain already has valid DKIM and SPF records.
Add a new TXT record to your DNS settings containing the tag "v=DMARC1" along with the desired policy for handling non-compliant emails (e.g. reject, quarantine, or take no action).
Also add options for DMARC failure reporting to senders.
Test your DMARC records to ensure they are configured correctly.
In SPREAD we give you the ability to verify that a DMARC policy has been configured.