Outlook definitely does support nested distribution lists. Migration is another matter, of course. I doubt that most migration tools would handle nested DLs well.

Nested DLs themselves are a potential maintenance and support nightmare. I'd avoid them myself and use categories to manage any list with more than 10 members or a membership that changes more than once a year.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/article.aspx?id=54

"Alan" wrote in message ups.com...
Hello,

We're migrating to Exchange/Outlook 2003 from a mail system which
allows nested distribution groups in the users' Contacts folder. The
migration tool can't migrate any nested groups because Outlook doesn't
support them.

Can anyone suggest a workaround please?

AD does allow nested distribution groups but company policy doesn't
allow external contacts in the AD. Plus the groups are in a few
hundred departmental mailboxes - not personal ones - so we don't want
to shift management of the lists (creation, updating, assignment of
permissions) from the users to the administrators.

It's a showstopper for us.

Thanks,

- Alan.