This rule runs the AD Monitor Trusts script. The script makes a call to the TrustMon Windows Management Instrumentation (WMI) provider, which is available in Windows Server 2003 and newer, to check trust relationships.

Communication between domains and forests occurs through trust. Trusts are authentication pipelines that must be present in order for users in one domain to access resources in another domain.

If a trust is broken, communication between the forest and/or domain will be blocked which may prevent users and services from accessing critical resources.

• One or both domains cannot resolve FQDN of the other domain.

• Network connectivity between domains is malfunctioning.

• Trust is miss configured in one or more domains.

Please review the alert details for additional information and look-up the related error codes.

Verify the trust status using the Active Directory Domains and Trusts MMC Snap-in.

Verify that the domain is resolvable through DNS by running 'nslookup [name]'.

• Active Directory Domains and Trusts