BES 4.1.4 MR1 is a hotfix for the base 4.1.4, hence the Domino server's requirements are still the same. Domino 8 is not amount the versions that RIM recommends
, why are you making your life less easier by running your BES outside these requirements?
If you need refresh, here they are:-
Install one of the following messaging and collaboration servers on the computer on which you plan to install the BlackBerry Enterprise Server:
•IBM® Lotus® Domino® server Version 5.0.3 or later (Version 5.0.12 recommended)
•IBM Lotus Domino server Version 6.0.1 Critical Fixpack 2 or later (Primary Domino Directory required)
•IBM Lotus Domino server Version 6.5 or later (Primary Domino Directory required; Version 6.5.1 required to support organizer data synchronization for roaming users)
•IBM Lotus Domino server Version 7.0 (required to support encrypted message display)
Note: Do not install the BlackBerry Enterprise Server on a partitioned IBM Lotus Domino server.
Source: Livelink - Redirection
Your life is not easier if you runs both BES and host your user's mail databases on the SAME computer. There is this term call "single point of failure
" in this miserable IT working world of ours. I guess you've got what I meant by now. If you're not getting it, then I will be explicit - if your BES crash, there goes your mail service.