This help section describes the Active Directory source of the Recipient Validation Test.
Select this option to detect the LDAP directory root automatically. This option works only on domain member computers.
Select this option to manually configure the LDAP root. Use this when you run ORF on a non-domain member computer or when you want to manually set the path to start the search from.
Enter the LDAP path, for example:
If you have multiple domains, using the LDAP path of the Global Catalog server is recommended:
Make sure not to add any trailing slashes in such cases.
Set this checkbox to use custom user credentials to authenticate with the AD server. May be required on non-domain member computers.
Enter the user name and password for authentication here. Note that the user name format required may depend on your AD settings, for example, it can be DOMAIN\user, domain@user or user.
Enable this option if you want to exclude mail-enabled but disabled AD accounts from the list of valid recipients, with the exception of Exchange resource mailbox accounts (i.e. room and equipment mailboxes).
Enter an email address to be tested against the currently configured LDAP path and press the Lookup button. Using this feature enables you to quickly check whether a recipient exist or not in the Active Directory, and also helps in troubleshooting Active Directory connection problems.
Note that this validation source is not available under Exchange Edge Transport Server, but these will validate the recipients on protocol level like ORF would do. However, the DHA Protection Test will not work on Edge due to the above.