Save the change details#
Record the exact old and new values, their TTLs and when the change was made. Identify the authoritative zone and the DNS provider that actually serves it. Editing a stale zone can make every subsequent wait unproductive.
Observe instead of guessing#
Compare authoritative answers with the recursive resolver used by your diagnostic tool. Cached responses may differ during a transition. MailMaid’s DNS check reports one resolver observation; it cannot establish what every receiver sees.
Validate the sending path#
Once the intended records are visible, send through the affected service and inspect the receiver’s authentication results. Use that evidence alongside DNS. A policy record appearing in a lookup is not the same event as a message passing alignment.
Primary references
Consult the current specification or provider guidance when applying these checks.
DMARC specification