InternetAddress not completly synchronising with ADSYNC

I use MMC with adsync snapin to manage windows and Notes accounts.My problem is with internet address format : the internet address separator (dot) is not well push in Domino directory :

As i configure Notes policy (internet address options) to have “FirstName LastName” and “dot” for separator and as i define my windows account with an internet address, the result in domino directory is the combination of the user login name value and the domain name.

Summarize :

If i create this windows account in AD :

UserLoginName : My.USER

Domain Name : lotus.nc

In the Notes New object - User window : Internet address = user@lotus.nc

The result in domino directory

person document

InternetAddress = myuser@lotus.nc

:-(((

Any idea ?

Subject: InternetAddress not completly synchronising with ADSYNC

Is anyone encounter this strange phenomenon ?