DKIM and SFP pass, no DMARC on sent emails.

Below steps to address your problem:

1. Set Up DMARC for Your Domain • Create a DMARC TXT record in your domain's DNS settings.

2. Ensure Domain Alignment • DMARC requires alignment between the domain in the "From" address and the domains used in SPF and DKIM. • If you're using a custom MAIL FROM domain, ensure that it matches the domain in the "From" address.

3. Verify DNS Records • Check that your SPF, DKIM, and DMARC records are correctly configured and published in your DNS.

4. Custom MAIL FROM Domain • If you're using a subdomain for MAIL FROM, ensure that the DMARC record is set up for the parent domain as well. • You might need to adjust your MAIL FROM settings in AWS SES to align with your primary domain.

5. Test Your Configuration • Send test emails and check the headers to ensure DMARC is included and passing. • Use DMARC reporting tools to monitor compliance and identify any issues.