Hi,

I'm back again sorry.

Using Quest to do AD / Exhange migration, old domain to new domain. EV server will stay on Old domain for now. Users should move from Old domain / Exchange server to New domain / Exchange and keep just one Mailbox in EV which they can access and vault new items to. All EV setup has been done that I can think of, but a migrated user is unable to vault new items.

I set SynchInMigrationMode to 0 as suggested to me, but it just came up with errors. When I tried to Synchronize a mailbox we had migrated, it was showing all the values as 0 in vault (0kb 0 mails etc) so I did a bit of research.

Here is what I found on SynchInMigrationMode:
http://seer.entsupport.symantec.com/docs/292785.htm

HKLM\SOFTWARE\KVS\Enterprise Vault\Agents\SynchInMigrationMode
DWORD - 1

The values are as follows:
0 - (Default.) Generate an error in the event viewer log.
1 - Link the new mailbox to the old record.
2 - Create a new record for the new mailbox

Reading this, it looks like option 0 does nothing but raise alerts, option 1 links the mailbox and option 2 creates a new mailbox on Vault.

So, from this, I tried option 1. After doing so, it allowed us to see mail on the test user when doing a sync and showed that the mailbox was already enabled. Now this user can view vaulted items in outlook (not in OWA – though OWA was working on the new domain for a new user) and the user can’t manually vault off items.

Looking in the vault events, I find Event ID 3350:

A new mailbox was linked to an existing entry in the Enterprise Vault database.
New mailbox: /o=MENZIES/ou=MENZIES-AG/cn=Recipients/cn=Alan.Yin
Existing entry: /O=Menzies Transport Services/OU=NTAMI/cn=Recipients/cn=Alan.Yin
Wait until the archive task has finished processing, then reset the SynchInMigrationMode registry value. See the documentation for further details.
For more information, see Help and Support Center at
http://evevent.symantec.com/rosetta/showevent.asp

Using the rosetta link, I get this page:
Details
Event Number 3350
Severity Information
Application or service EV
Typical message
A new mailbox was linked to an existing entry in the Enterprise Vault database. New mailbox: %1 Existing entry: %2 Wait until the archive task has finished processing, then reset the SynchInMigrationMode registry value. See the documentation for further details. For more information, see Help and Support Center at http://evevent.veritas.com/rosetta/showevent.asp
Comment
Please contact SYMANTEC support.
That event number does not yet have a corresponding solution on this system, or it may require intevention from a SYMANTEC engineer.

So, I have logged a call with Symantec, but if anyone has any ideas happy to try them!

Thanks for looking - James