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05.09.2008 at 08:39AM PDT, ID: 23389790
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Invalid Domain NDR for a valid domain

Tags: Microsoft, Exchange, 2003, The message could not be delivered because the recipient's destination email system is unknown or invalid.
Currently we have a user that is trying to send mail with attachments (V. Small) to various email addresses. These email addresses have been confirmed as valid, as we can send to them ourselves. The user in question can send attachments to us, it seems to be completely random. Once an address starts sending NDRs, then the user can never send to that email again when an attachment is included. Up until today, this was limited to one user, but it seems to be spreading.

All users log on via Windows Server 2003 Standard w/ Terminal Services. They use Outlook 2003 via Exchange.

The user receives the following bounceback:
Your message did not reach some or all of the intended recipients.

      Subject:             [Subject]
      Sent:                 08/05/2008 10:09

The following recipient(s) could not be reached:

      'name.surname@domain.co.uk' on 08/05/2008 10:09
            The message could not be delivered because the recipient's destination email system is unknown or invalid. Please check the address and try again, or contact your system administrator to verify connectivity to the email system of the recipient.
            <userdomain.co.uk #5.1.2>

We've done a complete user recreation (including mailbox purge), however, we had to export a PST and re-import it as we needed to keep the emails.
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Question Stats
Zone: Networking
Question Asked By: synergiq
Solution Provided By: montezz
Participating Experts: 1
Solution Grade: A
Views: 4
Translate:
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05.09.2008 at 10:42AM PDT, ID: 21535032

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05.12.2008 at 08:25AM PDT, ID: 21547776

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05.12.2008 at 09:18AM PDT, ID: 21548245

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05.09.2008 at 10:42AM PDT, ID: 21535032
We have seen corrupt contact and corrupt auto-fill entries. Dlete the contact and the auto-fill entry (start writing the recipient's name and shen it shows up in auto-fill use the arrow button to select then hit 'delete'). Recreate and try again. Hope this helps.
Accepted Solution
 
05.12.2008 at 08:25AM PDT, ID: 21547776
This has been after a full user recreation, so no auto-fill entries carried across.

It was experienced both before and after the full user recreation.
 
05.12.2008 at 09:18AM PDT, ID: 21548245
Just to mention this also happens when sending out via a 3rd party program which attaches a document then emails it...

It has also been brought to our attention that they can send emails to the users in question, so long as the email does not contain an attachment.
 
 
20080236-EE-VQP-29 / EE_QW_2_20070628