Event ID : 1205

Issue : An attempt to create a mailbox failed. Insufficient permissions, a Jet error, or a memory error may have caused the problem.

Event Source : MSExchangeIS Mailbox Store

Cause : This Error event indicates that a mailbox for the user account specified in the event description could not be created.
This event may occur when moving the mailbox from one mailbox database to another mailbox database. One or more of the following conditions may occur.

1. The mailbox for this user already exists in the mailbox tombstone table.
2. The user account specified in the event description was deleted but the changes were not replicated to all the domain controllers in Active Directory.
3. There are logical corruptions in the database.

You may also see an Error event 1022 in the Application log.

Description : Failed to create the mailbox of "{mailbox name}" with error "{error code}".

Action Required :

• Try creating a mailbox again. Use the error returned to help determine a course of action.
• Review the event log for related entries.
• If this error occurred during a move mailbox operation, make sure that the move was successful.
• If not, try to move the mailbox again. Make sure both the source and target mailbox database stores are in Mounted state.