LDAP Plugin error LDAP User Profile Synchronization

I am using the LDAP tools application and reieveing the following error

[Appian Work Item - 323 - WorkID 69 - execution02 - process 2098658 - model 65 : UnattendedJavaActivityRequest] ERROR com.appiancorp.ps.plugins.directory.syncwithusernames.service.SynchronizationService - Error while conducting name search:  javax.naming.PartialResultException [Root exception is javax.naming.CommunicationException: DomainDnsZones.eg.Albaraka.local:389 [Root exception is java.net.SocketTimeoutException: connect timed out]]