Currently, Hudu does not perform SPF or DMARC monitoring for subdomains, it only pulls from the domain. We’d like to request support for subdomain-level monitoring.
Ideally, Hudu should:
Check the subdomain directly for SPF, DMARC, DKIM, and TXT records.
For DMARC, if no subdomain record exists, fallback to the base/root domain’s DMARC record.