There are several tools available to test DMARC implementation:
1. DMARC Inspector – This is a free online tool that analyzes the DMARC policy and provides a report on its effectiveness.
1. DMARC Analyzer – This is a paid online tool that checks the DMARC policy, validates the SPF and DKIM records, and provides a detailed report on the authentication results.
1. Agari – This is a paid solution that offers advanced email security features, including DMARC, SPF, and DKIM validation.
1. Google Postmaster Tools – This is a free tool provided by Google that offers insights into email delivery and DMARC status.
1. Microsoft Exchange Online Protection (EOP) – This is a paid solution that offers DMARC authentication and other email security features.
1. Mimecast – This is a paid solution that offers advanced email security features, including DMARC authentication and reporting.