Safe to delete default address lists in Exchange 2007 ?


The big boss doesn't want to see the default address lists "all users", "all contacts", "all groups", "all rooms" in Outlook, and frankly neither do I. In Exchange 2003 you had to adjust permisions with ADSIedit, so I just left it for what it was.
Now we've upgraded succesfully to 2K7 (still have to apply SP1) and apparantly under EMS > Organization Configuration it is now possible to "remove" the default address lists and create new ones (the remove option is simply available by rightclicking the address list).

How safe is it to use that "remove" option on the default lists (again..all users, all groups, all contacts, all rooms) ? consequences etc. if any ?
I got to say, an operation that involves "remove" and "all users" sounds anything but comfortable.

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Manpreet SIngh KhatraConnect With a Mentor Solutions Architect, Project LeadCommented:
Removing is not a problem but why ?
You would anyways require OAB for Offline cache mode outlook users and other addresslists also play a part.
Rajith EnchiparambilConnect With a Mentor Office 365 & Exchange ArchitectCommented:
You can go ahead and remove it if you want. MS has an article covering the same
vindenAuthor Commented:
Thanks both of you

Why ?
simply because I don't want these address lists to show up in Outlook 2007 on clients when they compose new mails and click the "to" button. Are there other, safer ways to hide/remove them from Outlook ?
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Yes you can uncheck the option of allow inheritable from these objects in Adsiedit and then remove these groups from the security tab (Everyone, Anonymous and Authenticated) and this might require a restart of the Exchange services
Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
Go ahead and delete it. No harm.
vindenAuthor Commented:
Deleted the lists and still not fired..;)
Solved. Thanks again.
Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Hum mgood
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