Hi Jeremy,


On Fri, Jan 13, 2023 at 4:00 PM Jeremy Tourville via FreeIPA-users <freeipa-users@lists.fedorahosted.org> wrote:
>
> I am following the directions from here:
>
> Section: 32.6.4. Configuring DNS forwarding in AD
> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/installing_identity_management/installing-trust-between-idm-and-ad_installing-identity-management#configuring-dns-forwarding-in-ad_configuring-dns-and-realm-settings-for-a-trust
>
> I get an error message from AD DNS "The server with this IP Address is not authoritative for the required zone"
>
> This error makes me think there is a problem with my IdM DNS server.
>
> My setup is AD integrated and a one way trust is established with AD.  I was able to create a forwarder from IdM to AD without issue.
>
> My domains:
> AD = gsil.mil
> IdM = idm.gsil.mil
>

You may also take a look at: https://www.freeipa.org/page/Active_Directory_trust_setup

Search for "If IPA is subdomain of AD", as your IdM domain is a subdomain of AD. You may need to set an NS record to delegate authoritative answers from AD DNS to IdM DNS.

Rafael


> I have been reading:
> 86.1. Supported DNS zone types
> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_and_managing_identity_management/managing-dns-zones-in-idm_configuring-and-managing-idm#adding-a-primary-dns-zone-in-idm-web-ui_managing-dns-zones-in-idm
> and
> 6.1. The two roles of an IdM DNS server
> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/working_with_dns_in_identity_management/managing-dns-forwarding-in-idm_working-with-dns-in-identity-management#the-two-roles-of-an-idm-dns-server_managing-dns-forwarding-in-idm
>
> as well as several articles on DNS forwarding vs DNS delegation for AD.
>
> This is a step that I was able to make work with no issues in a previous setup/installation.
>
> Red Hat documentation states:
> 86.1 Supported DNS Zone Types
> "Forward DNS zones
>
>     From the perspective of IdM, forward DNS zones do not contain any authoritative data. In fact, a forward "zone" usually only contains two pieces of information:
>     -  A domain name
>     - The IP address of a DNS server associated with the domain "
>
>
> 6.1. The two roles of an IdM DNS server
> By default, the Berkeley Internet Name Domain (BIND) service integrated with IdM acts as both an authoritative and a recursive DNS server:
>
> Authoritative DNS server
> When a DNS client queries a name belonging to a DNS zone for which the IdM server is authoritative, BIND replies with data contained in the configured zone. Authoritative data always takes precedence over any other data.
>
> I am still having some confusion why this is not working.  Can someone enlighten me?
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--
Rafael Guterres Jeffman
Senior Software Engineer
FreeIPA - Red Hat