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Resolver Configuration ​

The Resolver Configuration page (System → Resolver Configuration) manages the DNS resolvers the server itself uses for outbound name resolution - the nameservers written to /etc/resolv.conf.

Overview ​

URL: /admin/resolver-configuration

This is a server-level setting, separate from the DNS records AdminBolt serves for hosted domains (see DNS Records). It controls which upstream nameservers the server queries when it needs to resolve hostnames itself - for example when fetching packages, validating licenses, sending mail, or issuing SSL certificates.

Enter the resolver nameservers to use and save the form; AdminBolt writes them to /etc/resolv.conf.

When to change it ​

Leave the default resolvers in place unless you have a reason to change them, such as:

  • Your provider requires specific resolver nameservers.
  • You want to use a particular public resolver for outbound lookups.
  • Name resolution on the server is failing and you need to point it at a known-good resolver.

Incorrect resolvers can break package installation, license validation, SSL issuance, and mail delivery. Change this only if you understand the impact, and verify that outbound DNS resolution still works afterward.

Who can do what ​

  • Admin - views and edits the server resolver configuration. This is a node-level setting and is admin-only.
  • Resellers and clients - do not have access to this page.