Fatal flaws with the MX/A/ test
- During DMARC policy evaluation, the process may have retrieved an SPF
policy or a DKIM public key which is associated with the RFC5322.From
domain or one of its descendants, even though the SPF test did not pass and
any relevant DKIM tests did
Here's some data that might be helpful to consider.
Data comprises about a year of reports for one domain.
229 reporting organizations
derived from 369 distinct strings
---+---
20 use Organization Name ("Example")
161 use Organizational Domain only ("example.net")
48 use
