Email Bounce Backs After Domain Migration Even After Deleting NK2 File

After a grueling domain migration and exmerging mailboxes from an E2003 to a different E2007 Organization, thought thought we were finished. But users are getting bouce backs. The cached Outlook emails have exchange attributes that point to the old mail server so choosing it in an email drop down will get a bounce back. Replying to an old mail will also get a bounceback. I know deleting the Outlook NK2 file will get rid of the cached (which is still not a great option) emails, key users affected are getting bounce backs by replying to emails from before the migration.  It is quite important that I explore for a quick solution to this, for these key users sign the checks... (diagnostic info below) PS I am aware of the Ingressor tool but i don't think it is going to resolve the "replying to old email issue".




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Delivery has failed to these recipients or distribution lists:
 'username'
The recipient's e-mail address was not found in the recipient's e-mail system. Microsoft Exchange will not try to redeliver this message for you. Please check the e-mail address and try resending this message, or provide the following diagnostic text to your system administrator.
 _____  
Sent by Microsoft Exchange Server 2007
Diagnostic information for administrators:
 Generating server: NEWMAILSERVER.NEWDOMAIN.COM
 IMCEAEX-_O=OLDDOMAINOUNAME=FIRST+20ADMINISTRATIVE+20GROUP_CN=RECIPIENTS_CN=ALIAS@NEWDOMAIN.COM#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##
Original message headers:
Received: from NEWMAILSERVER.NEWDOMAIN.COM([10.1.1.1.by
NEWMAILSERVER.DOMAIN.COM[10.1.1.1]) with mapi; Mon, 29 Sep 2008
11:41:09 -0400
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: SENDER NAME<FIRSTNAME.LASTNAME@MIGRATEDDOMAINNAME.com>
To: 'Recipient Name'
        <IMCEAEX-_O=OLDDOMAINOUNAME=FIRST+20ADMINISTRATIVE+20GROUP_CN=RECIPIENTS_CN=ALIAS@NEWDOMAIN.COM>
Disposition-Notification-To: FIRSTNAME LASTNAME
        <FIRSTNAME.LASTNAME@MIGRATEDDOMAIN.com>
Date: Mon, 29 Sep 2008 11:41:08 -0400
Subject: RE: Days off for Oct., Nov., & Dec., 2008/Re: AOD Scheduling
Thread-Topic: Days off for Oct., Nov., & Dec., 2008/Re: AOD Scheduling
Thread-Index: AckZ6YbWM0pegYROQ6mqxjRdJz9yTQIYC4hQ
Message-ID: <060A46F88584CF4E932EAE6E08AAD01A01ED9ED5C7@NEWMAILSERVER.NEWDOMAIN.COM>
References: <6D4890D88E691349A88B91228ED8ACBA82FF33@OLDMAILSERVER.OLDDOMAIN.COM>
In-Reply-To: <6D4890D88E691349A88B91228ED8ACBA82FF33@OLDMAILSERVER.OLDDOMAIN.COM>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator: <060A46F88584CF4E932EAE6E08AAD01A01ED9ED5C7@NEWMAILSERVER.NEWDOMAIN.COM>
MIME-Version: 1.0
pacman_dAsked:
Who is Participating?
 
pacman_dConnect With a Mentor Author Commented:
I'm wondering if I can add a custom X500 address to this migrated group's recipient policy?
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