I would do a search for the existing address and figure out what object is
already using it. With ldp, your search filter would be:
(proxyAddresses=smtp:(E-Mail Removed))
One you find it, hopefully it will be obvious who is squatting on that
address and what you should do to resolve it. Perhaps someone created a
contact or a different user with the same name?
Duplicate (and invalid) proxyAddresses are bad (they cause NDRs) and should
be avoided. It is very easy to create a huge mess with errant scripts that
do not validate for duplicates and write to proxyAddresses directly.
Joe K.
"David Reed" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi Everyone,
>
> I'm trying to fix a users email. Their email address is
> (E-Mail Removed)
>
> It SHOULD be (E-Mail Removed)
>
> The problem is, when I try to change or add the following SMTP address to
> this user: (E-Mail Removed) I get the following error:
>
> "This e-mail address already exists in this organization. ID no: c10312e7
> Microsoft Active Directory - Exchange Extension"
>
> Thanks,
>
> --
> David Reed
> Nework Administrator
> (E-Mail Removed)
>
>