Connectivity issue on Yousign V3 when using Quad9 DNS

This incident has been resolved.

The organization Signal-Spam, which manages spam reports, has accepted our request to remove yousign.app from their blocklist. DNS resolvers such as Quad9 that rely on this list will progressively stop blocking our domain.

Please note that due to DNS caching, the resolution may not be immediate. Depending on the cache refresh of each resolver, the propagation can take some time before full accessibility is restored.

We will continue to monitor the situation and provide confirmation once access is fully restored.

We have identified that our domain "yousign.app" (including all wildcard URLs such as the application and the API) is being mistakenly flagged by Quad9’s filtered DNS resolvers (9.9.9.9 and 149.112.112.112). As a result, a subset of users relying on these resolvers may experience difficulties accessing Yousign V3.

Our teams have already contacted Quad9 to review and restore normal access.

Workaround: Impacted users can switch to an alternative DNS provider locally or through their IT department.

We will share updates as soon as the situation is resolved.

If you have urgent questions, please contact our support team by sending an email to support@yousign.com.