188.8.131.52.2 RopLogon ROP Redirect Response Buffer
The following descriptions define valid fields for the redirect response buffer of the RopLogon ROP ([MS-OXCROPS] section 184.108.40.206.4), when the value of the ReturnValue field is 0x00000478 (ecWrongServer).
LogonFlags: This field contains the Private, Undercover, and Ghosted flags. The server returns these flags unchanged from the LogonFlags field of the RopLogon request (section 220.127.116.11.1). The client MUST ignore all other flags.
ServerName: This field contains the enterprise/site/server distinguished name (ESSDN) of server for the client to connect to, as the server included in the request either no longer hosts the requested mailbox (it was moved), or was the wrong server to connect to for access to public folders. The string includes the terminating NULL character. The string length (including the terminating NULL character) MUST be equal to the value specified by the ServerNameSize field.