A remote contractor DNS offboarding checklist should remove Tenant roles and account access, retire the contractor resource and resolver credentials, remove work DNS configuration, close or transfer exceptions, end temporary visibility, and verify that remaining remote work still resolves correctly. It must also revoke application sessions and device trust through those systems because DNS cleanup cannot do that.
The outcome is clean offboarding across the places remote policy can persist: the service, the endpoint, managed configuration, exception ownership, and retained activity access. This focused checklist complements the wider identity, application, data, equipment, and contract exit. It prevents a quiet DNS path from surviving after the obvious login has disappeared.
Remote policy leaves more than a login
Remote work separates controls that look unified in an office. The contractor may have an account invitation, roles in more than one client Tenant, a named resource, an approved resolver credential, a managed DNS setting, a VPN-selected resolver, browser secure DNS, and exceptions owned under a project. Removing email or a directory user does not prove that those DNS artifacts are retired.
Set an exact end time and one exit owner before making changes. CISA recommends disabling accounts when they are no longer needed and managing access according to least privilege.1 Apply the same lifecycle discipline to DNS roles and resources, while remembering that DNS is not the identity system. A clean DNS result cannot establish that a cloud session, repository token, or client credential has been revoked.
Inventory every remote DNS artifact
| Artifact | Exit decision | Completion evidence |
|---|---|---|
| Tenant roles | Remove from every completed client assignment | Tenant controls and retained activity are unavailable |
| Account membership | Revoke when no other account work remains | Account access no longer succeeds |
| Remote resource or endpoint | Retire or transfer to a named owner | Inventory contains no orphaned assignment |
| Resolver configuration or credential | Remove through its owning process | Retired path no longer receives team policy |
| Project exception | Delete or independently reapprove | Rule has a current purpose, owner, and expiry |
| Temporary activity review | Close access and apply retention policy | Purpose and deletion or retention date are recorded |
Build this inventory from the contract, access record, endpoint inventory, and policy ownership records, not by searching domain history for the contractor's name. DNS filtering acts on domain lookups and policy outcomes. It cannot read page contents, full URLs, search terms, in-app chats, voice audio, or full browser history, and a background lookup cannot reliably identify a person.
Remove dependencies in a controlled order
- Confirm the contractor, client assignments, exact exit time, device ownership, and responsible exit owner.
- Transfer policy documentation and independently reapprove any shared exception before disabling its old owner.
- Remove assigned roles from each completed Tenant, then revoke account membership when no other work remains.
- Retire contractor-only resources and resolver credentials; transfer a shared resource only to a named current owner.
- Remove organization-owned DNS configuration through the same approved device or management process that supplied it.
- Close temporary detailed-activity access and apply the documented retention or deletion decision.
- Revoke sessions, application access, VPN access, secrets, device trust, and client data through their owning systems.
- Run the remote DNS tests and attach each control's separate result to the exit record.
Do not erase a shared exception before understanding its dependency, and do not transfer it merely by changing the owner field. Recreate a justified rule with the exact hostname, current business purpose, smallest scope, and expiry. Apple documents that DNS settings can arrive as a device-management payload; organization-owned settings should be removed through the owning management channel rather than by changing unrelated personal network configuration.2
Prove both sides of the remote exit
First test continuity from a remaining authorized remote resource on its real work paths. Confirm the intended resolver, one ordinary client workflow, and one provider-owned harmless blocked test domain. Include the normal remote context, such as home Wi-Fi or an approved VPN path, but do not change platform settings outside the offboarding scope. Microsoft notes that Windows DNS over HTTPS behavior depends on resolver and policy configuration, so a test from an office administrator device is not a substitute for the affected remote path.3
Then test retirement from the service side: the old account lacks the Tenant role, the retired resource or credential cannot retrieve the team policy, and no exception remains owned by the departed identity. If an approved process can verify removal on the old device, confirm only that the organization-owned DNS setting is gone. Never request unrelated personal resolver details and never use a live malicious domain.
A browser error, silent activity chart, or successful public DNS lookup is weak evidence. Cached answers can avoid a new lookup; VPNs and browsers can choose other resolver paths; and DNS success says nothing about application authorization. Record the expected result, actual resolver path, explicit policy outcome, time, and owner. Route non-DNS failures to the system that owns them.
Preserve records without preserving access
Offboarding may require a minimal administrative record showing what was removed, transferred, tested, and retained under policy. That does not justify keeping detailed DNS activity indefinitely or leaving an old reviewer role active. RFC 8932 recommends minimizing retention and restricting access to DNS data.4 Prefer completion evidence and aggregate outcomes; use detail only for a named legal, security, or troubleshooting purpose and period.
After the deadline, sample the inventory for orphaned resources, disabled owners, expired exceptions, and active resolver credentials. Review the checklist when device ownership, remote access method, client structure, or retention policy changes. A repeatable review is stronger than relying on the next project manager to remember where remote DNS state can hide.
Remote exit questions
Does removing remote DNS configuration revoke application access?
No. Resolver configuration controls where DNS questions go; it does not revoke application sessions, credentials, API keys, VPN access, device trust, or client data. Each owning system must report its own offboarding result.
Should an agency delete every exception when a contractor leaves?
Delete contractor-only exceptions. Transfer a shared dependency only after a current owner revalidates its exact hostname, purpose, scope, risk, test result, and next review date. Do not preserve a broad allowance simply because its history is unclear.
How can the agency verify cleanup on a remote device?
Use the approved device or management process to confirm that the work resolver profile or credential is gone, then confirm from the service side that the retired resource cannot receive team policy. Do not ask a former contractor to browse a malicious site or reveal unrelated personal network settings.
Close one remote resource in Veilty
In Veilty, remove the contractor's assigned roles from each completed team Tenant; account membership is separate and should be revoked when no other account work remains. Retire the supported work resource and review its profile and exceptions. Reusable baseline and enforced policies can be assigned across Tenants. A resource may adapt baseline policy when permitted but cannot weaken enforced policy.
Retained DNS activity belongs to the Tenant, is end-to-end encrypted with user-held keys, and is available only through permitted Tenant roles, while the resolver necessarily processes live requests. Close temporary review access, verify one remaining remote resource still receives the expected policy, and record the retirement result without keeping an unnecessary domain-level narrative.