Hello, I try to get access from PowerShell to the mailboxes from an exchange server in another domain using the command Get-Mailbox -DomainController "mydomain" but I receive back an error. An Active Directory error 0x51 occured when trying to check server 'mydomain' suitability" 'The LDAP server unavailable' Using another software I have no problems to list the LDAP, so the LDAP server exists!!! I've tried also some work around using $AdminSessionADSettings variable, I was able to change the DefaultScope and the ConfigurationDomainController but when I tried to list the mailboxes I got nothing back (not even an error message or something similar). Thanks in advance for your help!