interanal Addressing issue

[Brian McCann]

Just migrated from 5.5 to 2K and the users are having problems
sending email to other employees in the address book.
They get this message:
-----Original Message-----

From: System Administrator
Sent: Wednesday, October 08, 2003 2:18 PM
To: Cayla McNeil
Subject: Undeliverable: test email

Your message did not reach some or all of the intended recipients.

Subject: test email
Sent: 10/8/2003 2:18 PM

The following recipient(s) could not be reached:

Cayla McNeil on 10/8/2003 2:18 PM
The e-mail address could not be found. Perhaps the recipient
moved to a different e-mail organization, or there was a mistake in the
address. Check the address and try again.

When put the name in outlook and select the properties and then the Email
Addresses tab the X400 name is still referencing the old Exchange
organiztion that is no longer up. Is there any way to fix this issue?

Thanks in advance.


Brian