MailCleaner Support

DMARC (Domain-based Message Authentication, Reporting and Conformance)¶

DMARC is a technical specification, created by a group of organizations to help reduce the potential for email-based abuse, such as spam, email spoofing and phishing e-mails, by solving some long-standing operational, deployment, and reporting issues related to email authentication protocols. DMARC standardizes how email receivers perform email authentication using the well-known – Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) mechanisms.

• DMARC is a technical specification
• DMARC standardize receivers email authentication using SPF and DKIM
• DMARC helps to indicate email protection (enable SPF and DKIM)
• DMARC will move mails which fails SPF and DKIM to junk or reject
• DMARC helps the users to protect from fradulent and harmful activities.

Enable or disable DMARC report

There are two ways for doing that:

1. Via the MailCleaner administration interface: Configuration > SMTP > Enable reporting to DMARC domains
2. Restart the Incoming MTA services at Monitoring > Status

Purging reports:

For purging DMARC reports you can delete reports:

cd /tmp/dmarc_reports && find . -mtime +15 -delete

Or simply compress it:

cd /tmp/dmarc_reports && find . -mtime +15 -exec gzip {} +