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1. Was the account migrated? <br />
2. <a href="http://support.microsoft.com/kb/284204" rel="ugc nofollow">http://support.microsoft.com/kb/284204</a><br />
3. Possible Cause: The user directory attributes, such as homeMDB or<br />
msExchHomeServerName, may be missing or corrupted.<br />
<br />
Troubleshooting: Verify the integrity of the user directory attributes, and<br />
then run the Recipient Update Service again to make sure that the attributes<br />
that are required for transport are valid.<br />
<br />
You can use ADSIEdit to view these properties on that person's user<br />
object...
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1. Was the account migrated?
2. http://support.microsoft.com/kb/284204 [http://support.microsoft.com/kb/284204]
3. Possible Cause: The user directory attributes, such as homeMDB or
msExchHomeServerName, may be missing or corrupted.

Troubleshooting: Verify the integrity of the user directory attributes, and
then run the Recipient Update Service again to make sure that the attributes
that are required for transport are valid.

You can use ADSIEdit to view these properties on that person's user
object...

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Please provide instruction how to use ADSIEdit. Thanks.
</div>


Please provide instruction how to use ADSIEdit. Thanks.

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<div class="content wysiwyg-content">
We got this message eventhough the user is still active and the correct address is on the system:<br />
<br />
The message was undeliverable because the recipient specified has changed address permanently and forwarding was not applicable
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</div>


We got this message eventhough the user is still active and the correct address is on the system:

The message was undeliverable because the recipient specified has changed address permanently and forwarding was not applicable

Undeliverable message using Outlook 2003 in Exchange 2003 SP2

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.

AntiSpam

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.