From: Rene (reneRJCONSULTING.CA)
Date: Tue Mar 16 2004 - 22:21:03 CST

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Environment

Exchange 2000 or 2003 running in Native mode in a W2K AD.

Problem

Regular users with no rights to modify ad security groups have the ability
to change a distribution list to a security group.

Steps to recreate problem.

1: User opens a mailbox with Outlook 2000 / XP / 2003
2: Navigates to mailbox permissions
3: Add distribution list from Gal access as contributor.
4: Save changes

Once the user adds the distribution list Exchange will convert the
distribution list to a like security group

for example if you have a All_Users universal distribution list Exchange
will convert to a Universal Security group.
This can cause some serious Kerberos issues if you are running close to the
Kerberos key size limits.

Has anyone come across this and if so have they found a solution to stopping
this behavior?

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