Definition
DMARC failures usually stem from alignment or missing records. Resolution keeps legitimate mail from being quarantined.
Best Practices
- Check the Authentication-Results header to see which check failed.
- Fix SPF or DKIM alignment as indicated.
- Retest after changes and watch aggregate reports.
Was this useful?
Related Glossary Terms
Abuse Complaint
An abuse complaint is a report from a recipient who marks an email as spam, which negatively affects sender reputation and deliverability.
Alt Text
Alt text is the written alternative to an image in an email, displayed when images are blocked, slow to load, or consumed by screen readers.
AOL Mail for Email Marketers
AOL Mail is a legacy email provider with specific deliverability requirements and rendering quirks, now operating as part of the Yahoo+AOL network under shared infrastructure.
Email Authentication Protocols
Email authentication protocols are technical standards that verify the identity of an email sender, helping mailbox providers distinguish legitimate mail from spam and phishing.
BIMI
BIMI (Brand Indicators for Message Identification) is an email standard that allows brands to display their logo next to their emails in supported email clients. It requires DMARC enforcement at quarantine or reject policy.
Bounce Management
Bounce management is the process of handling emails that are rejected by mailbox providers, including classification, removal of bad addresses and protection of sender reputation.
Frequently Asked Questions
SPF or DKIM fails, or neither aligns with the from domain.
Read the Authentication-Results header and DMARC reports.
Aligning sending domains and fixing DNS records.