How often is DNS information on a domain refreshed?

For the most part, this applies to data seen in the Diagnostics > Domains page, and the Status > Protection To-Dos recommendations list.

• DMARC information is polled hourly (on the half-hour) for Active domains and daily (midnight UTC) for Defensive domains.
• SPF records are checked daily for Active domains (00:39 UTC) and every two days (01:39 UTC on odd-numbered days) for Defensive domains.
• DKIM records are checked daily for ALL domains (13:55 UTC).
• BIMI records are checked daily for ALL domains (13:55 UTC).