Can we sync exchange 2010 address book with Nokia mail to exchange?

Not as far as I know. Nokia MFE is an Exchange ActiveSync client and as such will perform over-the-air lookups against the Global Address List. Tony

You can check if similar options are available on Nokia phone: Click Menu -> Check Names -> Company Directory For more reference, please check the following link: http://www.msexchange.org/tutorials/Exchange-2003-Mobile-Messaging-Part4.html Thanks, Simon