An old exception is a question to revisit, not permission that renews itself. An agent can collect dates, compare current evidence with the original reason and prepare a closure recommendation. The useful output is a decision-ready record that explains what remains uncertain. It is not an automatic DNS cleanup job.
Reconstruct the original allowance
Start with an exception ID, affected customer, domain, sending service, exact allowance, original business reason, accountable owner and expiry. Describe the expected risk and compensating control. An exception to a review timetable differs from a DNS authorization that permits an additional sender. Do not combine them in one vague “DMARC exception” label.
Link the original approval and baseline. When either is missing, record that absence and ask the owner to reconstruct it. The absence does not prove abuse, but it also does not authorize the agent to retain or remove the allowance. Configuration management connects approved state, change control and monitoring; this workflow applies that general framing to exception review. NIST SP 800-128.
Ask what would change the decision
Compare the original reason with current routing, vendor capabilities, service ownership and scheduled activity. Identify the specific evidence that would support renewal, migration or closure. For a quarterly sender, two quiet weeks of aggregate reports do not establish retirement. Check the application schedule and replacement route with its owner.
Keep business authorization separate from protocol results. Passing authentication does not identify which internal team still needs a service. Conversely, a legitimate business service can be misconfigured. Alignment is a technical relationship between authenticated identifiers and the Author Domain, not a procurement or ownership check. RFC 9989.
Work the exception example
Suppose an exception covers a quarterly invoicing route that originally lacked aligned signing. Its owner now says the route was retired, but the available records show neither the scheduled job’s disablement nor a verified replacement. The recommended outcome is a hold for route evidence, not closure. Ask for the current job state, replacement transaction evidence where applicable, and the remaining shared dependencies.
This is a hypothetical decision, not an executed script or observed exception. The closure rule requires evidence of replacement or retirement, a dependency review and approval for any configuration removal. An agent cannot establish the owner’s authority merely by repeating the statement. Keep the technical evidence, business decision and change permission distinct.
Choose a bounded disposition
Renew only with a current reason, named owner, explicit next review and compensating control. Revise the exception when its scope has changed. Close it only after the closure test succeeds and any authorized configuration change has been verified. An expired exception should trigger escalation, not silent renewal or abrupt deletion that breaks critical mail.
The agent should prepare the evidence packet and highlight contradictions. A business owner confirms the continuing need, a mail administrator checks dependencies and a security owner accepts residual risk. Make renewal authority explicit. A recommendation that sounds confident does not replace any of these decisions.
Retain the closure story
Record the decision date, approver, exact affected scope, evidence references and unresolved limitations. Preserve a historical exception as closed rather than removing its explanation from the audit record. Schedule follow-up against the sender's actual business cycle. If the evidence remains incomplete, assign an owner and deadline so “investigate” does not become a second permanent exception.