If possible in Exchange 2007, How to enable/disable to copy definite attributes of users to Offline Address Lists. Like's "mobile", "department" e.t.c.

Not sure what you are asking for exactly.Are you referring to the details template?http://technet.microsoft.com/en-us/library/bb232094.aspxManaging Details Templateshttp://blogs.msdn.com/dgoldman/archive/2008/08/09/why-details-template-changes-don-t-seem-to-show-up-on-clients-after-being-made.aspxWhy details template changes don't seem to show up on clients after being made

I'd like users of a certain group couldn't see other groups' special properties (firstproperties "mobile")in cached mode in MS Outlook.If these properties are not be copied to OAB during its generation, so users mentioned above will be able to read the properties only if they are allowed to read them in AD.

Have you seen below? http://exchangepedia.com/blog/labels/GAL__Address%20Lists.htmlVinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|

What you are referring to is Address List Segregation:http://technet.microsoft.com/en-us/exchange/bb936719.aspxWhite Paper: Configuring Virtual Organizations and Address List Segregation in Exchange 2007

Hi,You can also use the ADSI Edit tool to deny the relevent permission based on the need.1. Navigate to the Distribution Group's properties2. Select the Security tab3. Click Add4. Select the user or group you want to deny permission to (you can use the Everyone group to simulate what Exchange Server 2003 does)5. Click OK6. click Advanced (wait... ) to open Advanced Security Settings7. Select the Permissions tab8. Select the user or group if not already selected9. Click Edit to open the Permissions Entry properties for the selected user/group10. Select Properties tab11. Click on the "Deny" checkbox for the Read Mobile Number property so it is checked.Based on your needs, I recommend to do this operation based on Andy's link.ThanksAllen