Greetings: I've been trying to create linked mailboxes using Powershell. I've got Exchange 2007 Beta 2 deployed in a 2nd forest, with a one-way forest trust to another forest I'm using as the account source. The command I'm using is a follows: New-Mailbox -Name:'Test User' -Alias:'Test.User' -OrganizationalUnit:'domain.tld/Placeholder Accounts' -Database:'CN=Mailbox Database,CN=First Storage Group,CN=InformationStore,CN=DFE2K7MB,CN=Servers,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=org_name,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=domain,DC=tld' -UserPrincipalName:'test.user@domain.tld' -SamAccountName:'test.user' -FirstName:'Test' -Initials:'' -LastName:'User' -LinkedMasterAccount:'Test User' -LinkedDomainController:'DC1.accountdomain.tld' -LinkedCredential:'accountdomain\adminaccount' It doesn't like whatever I provide it for the LinkedCredential parameter, though; I get the following returned: New-Mailbox : Cannot bind parameter 'LinkedCredential'. Cannot convert value "accountdomain\adminaccount" to type "System.Management.Automation.MshCredential". Error:"Invalid cast from 'System.String' to 'System.Management.Automation.MshCredential'." I gather from this that I can't provide the credentials as a string, but I have no idea where to go from here. Can anyone help me out? Just how do you use the LinkedCredentials parameter? Thanks, Andy Schan Titus International, Inc.

Linked credential doesn't take a a "domain\username". It takes a Credential object. Do something like this: $a=Get-Credential... -LinkedCredential $a This is because it needs to have a domain\username *and* password for accessing the user forest, not just a domain\username.

OK, thanks. I'll give that a try when I get back to the office. Andy