Outage in DNSFilter

Domain Categorization & System Load

Resolved Minor
June 20, 2025 - Started about 1 month ago - Lasted 3 days
Official incident page

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Outage Details

What Happened with Domain Categorization and System Load (e.g. msn.com ) -Some well-known domains like msn.com and started showing up as “uncategorized,” and our backend systems experienced a large spike in traffic. Here’s what we know: What Happened: -Some websites like msn.com temporarily lost their category labels due to them being treated as uncategorized in the system. -Our platform automation tried to correct this but sent too many repeated requests at once, overloading internal systems. -This caused delays in restoring correct category information, so some domains stayed uncategorized longer than expected. -We’ve deployed a fix to reduce the load and are restoring normal behavior. Key Customer Impact: -Domains like msn.com appeared uncategorized because they dropped out of cache and couldn’t be reloaded reliably. -This could affect content filtering accuracy, especially for high-traffic or policy-critical domains. -No DNS resolution outages occurred, but policy behavior may have been incorrect. Fix: A fix has been implemented; however, due to caching, it may take 24–48 hours for affected domains to reflect the correct categorization. Workaround: In the meantime, you can either add the impacted domains to your allow list or temporarily allow uncategorized domains within your policy settings to avoid disruption.
Latest Updates ( sorted recent to last )
RESOLVED about 1 month ago - at 06/23/2025 12:51PM

This incident has been resolved.

MONITORING about 1 month ago - at 06/20/2025 05:07PM

What Happened with Domain Categorization and System Load (e.g. msn.com )
-Some well-known domains like msn.com and started showing up as “uncategorized,” and our backend systems experienced a large spike in traffic. Here’s what we know:

What Happened:
-Some websites like msn.com temporarily lost their category labels due to them being treated as uncategorized in the system.
-Our platform automation tried to correct this but sent too many repeated requests at once, overloading internal systems.
-This caused delays in restoring correct category information, so some domains stayed uncategorized longer than expected.
-We’ve deployed a fix to reduce the load and are restoring normal behavior.

Key Customer Impact:
-Domains like msn.com appeared uncategorized because they dropped out of cache and couldn’t be reloaded reliably.
-This could affect content filtering accuracy, especially for high-traffic or policy-critical domains.
-No DNS resolution outages occurred, but policy behavior may have been incorrect.

Fix:
A fix has been implemented; however, due to caching, it may take 24–48 hours for affected domains to reflect the correct categorization.

Workaround:
In the meantime, you can either add the impacted domains to your allow list or temporarily allow uncategorized domains within your policy settings to avoid disruption.

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