# Schedule OPNsense BIND blacklist refresh beyond configuration saves > Review the BIND DNSBL save-triggered update and separately configured cron refresh before relying on ongoing blacklist currency. - Canonical URL: https://update.dsesecurity.com/updates/schedule-opnsense-bind-blacklist-refresh-beyond-configuration-saves/ - Publisher: Detection Systems & Engineering (DSE Security) - Author: DSE Security Editorial Team - Published: 2026-10-30T06:04:45+00:00 - Modified: 2026-10-30T06:05:13+00:00 - Last reviewed by DSE: 2026-10-30 - Resource type: Guide - DSE priority: Advisory - Topics: Cybersecurity, Networks & Infrastructure - Reading time: 3 minutes ## What you need to know Review the BIND DNSBL save-triggered update and separately configured cron refresh before relying on ongoing blacklist currency. ## Potentially affected OPNsense BIND plugin deployments using its documented DNSBL lists. ## DSE recommendation Choose an owned refresh schedule and verify the selected update-and-reload task separately from a configuration save. ## Article Bottom line: Choose how the DNSBL lists will be refreshed after the initial configuration. Keep a save-triggered download and the separately scheduled update task as distinct operational checkpoints. ## Source fact: what the authority says The [OPNsense BIND plugin guide](https://docs.opnsense.org/manual/how-tos/bind.html) describes its BIND DNSBL feature. It warns against selecting every blacklist because blocked nested advertising can prevent some websites from loading content. Whitelist Domains is applied before the blacklists to allow a domain blocked as a false positive. The guide updates blacklists on every BIND configuration Save and provides a cron task that refreshes the selected lists and reloads BIND. ## What the source does not establish This article plans list-refresh operation rather than claiming that a downloaded list detects every threat. It does not select a universal interval, guarantee a successful download or approve broad allowlisting to hide unexplained application failures. ## Applicability questions - Which DNSBL lists and exceptions are currently selected? - Who owns ongoing list currency after the initial configuration? - What separate cron task and interval are proposed? - Which harmless lookup and ordinary website checks will represent the intended policy? ## DSE recommendation: controlled next steps The following steps are DSE recommendations based on the cited source. DSE recommends separating configuration approval from refresh operation. Record the selected lists, the reason for each and the intended owner. Have that owner identify the ongoing update mechanism instead of accepting the initial Save action as a complete maintenance plan. Choose an interval through the organization’s change process, not a universal recommendation. Review the selected cron task against the current plugin guide and the actual deployment. Keep the task identity, schedule and operational contact with the DNSBL configuration. Decide who investigates an absent or failed refresh and how a continuing gap will be escalated rather than silently ignored. Use a small, reviewed list population for the initial trial. Prepare a harmless lookup case associated with the intended policy and a normal website transaction agreed by the service owner. Investigate an unexpected application failure before adding an exception; require an explanation and owner for every proposed whitelist entry. Preserve the original list and exception selections before changing the schedule. Keep an immediate configuration-save observation and a later scheduled-run observation as separate checkpoints. Avoid expanding the blocked population merely to obtain a visible test result, and keep recovery of normal DNS service explicit in the maintenance plan. ## Verification and evidence Proposed verification: observe an approved configuration Save and record the actual update evidence available from the deployment. Then observe the separately scheduled task and its reported completion or failure. Check that the selected operation matches the reviewed update-and-reload task; do not fill a missing observation with an assumed successful run. Repeat the approved harmless lookup and ordinary website transaction after the planned refresh. Retain the list selection, exception rationale, task identity, timestamps and actual results together. Accept only the demonstrated refresh and policy cases, and leave unexplained download gaps or normal-content failures open for the responsible operator. ## Official references - [OPNsense — BIND Plugin](https://docs.opnsense.org/manual/how-tos/bind.html) — official product documentation; confirm the installed release and configuration. Source review completed October 30, 2026. Recheck the official documentation and deployment-specific applicability before a production change. ## Primary reference - Name: OPNsense — BIND Plugin - Authority: docs.opnsense.org - URL: https://docs.opnsense.org/manual/how-tos/bind.html - Source publication date: Not stated by the source ## Citation and use Preferred citation: “Schedule OPNsense BIND blacklist refresh beyond configuration saves,” DSE Security, https://update.dsesecurity.com/updates/schedule-opnsense-bind-blacklist-refresh-beyond-configuration-saves/ Publishing principles: https://update.dsesecurity.com/updates/dse-updates-editorial-methodology/ Usage and citation policy: https://update.dsesecurity.com/usage/ Copyright © 2026 Detection Systems & Engineering. All rights reserved.