I have a user that doesn't receive his contacts from the BES Server.
We are using a Domino Server. All His contacts has been replicated in his mail file.
The field to Enable the syncronisation of the address book below PIM has been set to true.

I see two errors in the windows event viewer...
event ID 26016:
SYNC-PIMConnector] User's Address Book is not initialized in Notes, sync request ignored. [LastName, FirstName :294]

EventID: 26016:
[SYNC-PIMConnector] User's Email Settings is not initialized in Notes, sync request ignored. [LastName, FirstName :294]

I've been looking everywhere to find a solution, but didn't find one that works yet.

Any clues you can give me to fix this issue?

A Quick Search on these forums turned up this.