Hi,Does anyone know if its possible to get the export-mailbox cmdlet working from a server in domain a against a server in domain b with NO trusts between them. With exmergeI can accomplish this with runas but how much I try using the export-mailbox cmdlet I cannot get it to work. Any ideas?Regards,UC

Did you try running your Exchange Management Shell using runas?Karl

Yes, it didn't work./UC

What error do you get?Karl

Hi,Since those two forest is not trusted, then we cannot get credential in the other forest. Besides, Id like to know what are you planning to do, move mailbox? Migrate Exchange Server? Move certain mailbox data to another mailbox? Regards, Xiu

Hi,Ok then I know. I'm planning to migrate a set of mailboxes to a new environment. I need to have a look at the move-mailbox cmdlet to see what filtering options are available since only a limited amount of data will be moved. Thanks,UC

Hi,Then you can try to use move-mailbox with credential.More information to share with you: How to Move a Mailbox Across Forestshttp://technet.microsoft.com/en-us/library/aa997145.aspx Regards,Xiu