[oOp]

the Domain Admin Account: DOMAIN\Administrator

Now i get the special:

(AFFF4EA9) -> MailboxManager::SubsystemInitialize - g_pSession->OpenMsgStore (0x8004011d)

Error. Shall i deinstall or can i do something?

i.e. configuring the DOMAIN\Administrator as in BES Toolkit for Exchange Step 2 described?

Or shal i create the besadmin account and then manage as described here:
How to switch BlackBerry Enterprise Server service accounts
How to switch BlackBerry Enterprise Server service accounts

The Domain\Administrator got no email Account in Exchange Server i think.

Thanks for your help!

[DarkWater]

Follow the articles to create the BESAdmin account and switch it.