||When data collection for Password Expiration Alerting is completed, the "A referral was returned from the server" error is returned
||The error is returned because of an invalid LDAP request.
Usually LDAP results in such errors when the request includes names/objects from another domain.
For Password expiration Alerting the reason for the error can be invalid filtering by OU.
Password Expiration Alerting works with a single domain, and the domain name is determined by the Managed object name.
If you specify an OU from another domain in the OU filter, the above error will occur
||In order to fix the error you need to reconfigure OU filtering to exclude objects from other domains, or just disable OU filtering.