How come it wont let me add someones Email on Exchange 2007?

fstinc
fstinc used Ask the Experts™
on
When I try to add an email address to a mail box, it does not allow me to. The message reads:

"The proxy address "smtp:xxx@contoso.com" is allready being used by "contoso.com/xxx". Please choose another proxy address"

Thanks it would really be helpful
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Are you trying to copy one user on another users email?
That error usually means that the smtp address you are attempting to add is already being used by another mailbox.

Author

Commented:
I will need to go one by one checking each users mail box. Do you know of a faster way to find this?
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Author

Commented:
I checked all mail box email addresses and no other mail box has the email address added (Secondary). Is the only way to do this by disabling (Active Directory) the owner of the mail box and then adding the email address as a secondary to another mail box?
Jon BrelieSystem Architect

Commented:
open a new message in outlook
type in the address
Hit Ctrl+K to resolve it.
double click on the user it resolves to

that should show you who has that address.

Author

Commented:
Control + K did not do anything. I have highlighted and did this various ways.

Author

Commented:
Can every email address only be associated with 1 mail box. Because its only associated to the original user. I have added the email address to other mail boxes before and not had a problem. Unless I have to disable the user in Active Directory?
System Architect
Commented:
You can only apply an address to a single user.  Even disabled users will prevent you from adding an address to another user.  You must first remove it from the existing user.

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