The information in this article applies to:
- Microsoft Exchange Server versions 4.0 and 5.0
SYMPTOMS
When you create a new address in mailbox, the following error message
appears:
This e-mail address already exists in this organization.
No: c10312e7
CAUSE
There is probably a mailbox or custom recipient that already has the
address that you are attempting to add to the mailbox e-mail addresses
list.
RESOLUTION
To resolve this problem, do one of the following:
- On the Tools menu, click Find Recipients to quickly search the global
address list for the mailbox or custom recipient with the duplicate e-
mail address.
-OR-
- Export the entire global address book to a .csv file to search
for the mailbox or custom recipient with the duplicate e-mail address:
- On the Tools menu, click Directory Export and choose mailboxes,
custom recipients, and hidden objects.
If the file is opened in Microsoft Excel you can quickly find which
container the "duplicate" mailbox or custom recipient resides in. For
example:
/ou=ServerName/cn=Recipients
- If, when returning to the Exchange Server Administrator program you
still cannot find the duplicate mailbox or custom recipient the entry
may be hidden.
If the entry was found in Excel, check column "M" Hide from AB. If the
value is 1 this indicates that this mailbox or custom recipient is a
hidden object.
- Go to the container specified in column "L" and show hidden recipients:
On the View menu, click Hidden Recipients.
The duplicate mailbox or custom recipient can be modified or deleted. If
the duplicate entry is a mailbox, it is recommended that you have the
mailbox recipient log on to the duplicate mailbox and download any mail
that may have been delivered to it to a .pst file and then upload it to the
correct mailbox using the correct profile.
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