Hi,
I get a strange error when managing a specific distribution group. I try to add a member, but I get the below error when I click on either Apply or OK. The odd thing is, the new member is actually added, but I can't close the dialog window unless I click the 'X' on the upper-right.
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Microsoft Exchange Error
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The following error(s) occurred while saving changes:
Add-DistributionGroupMember
Failed
Error:
The recipient "sub.company.com/Domain Users/Location/John Doe" is already a member of the group "sub.company.com/Exchange Resources/Distribution Groups/GROUPNAME".
It only happens to this particular distribution group (so far, we have hundreds so I can't check them all, but the half dozen I've checked so far don't exhibit the same behavior.) It is a mail enabled universal distribution group.
Any insights are greatly appreciated.
Thanks!