Microsoft KB Archive/251016

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Event IDs 290 and 270 logged because of public folder permissions

Article ID: 251016

Article Last Modified on 3/6/2007


  • Microsoft Exchange Server 5.5 Standard Edition

This article was previously published under Q251016


If a public folder has an SMTP e-mail address, and a user who does not have rights to post to that folder sends an e-mail message to that SMTP e-mail address, Event ID 270 and Event ID 290 may be logged in the application event log of the server. A descriptive non-delivery report (NDR) may also be generated.

This issue may also occur if a user from the Internet sends an e-mail message to the public folder, and in the client permissions for that folder, the Default item under Name has anything less than Contributor permissions selected under Role. In this case, the NDR is non-descriptive.


If you examine Event ID 290 and Event ID 270, you can determine who sent the e-mail messages, and to which public folder the e-mail messages were sent.

The Event IDs are similar to the following:

Event Type: Warning
Event Source: MSExchangeMTA
Event Category: X.400 Service
Event ID: 290

A non-delivery report (reason code transfer-failure and diagnostic code undeliverable-mail-recipient-deceased) is being generated for message C=US;A= ;P=JOE;L=EXCHSRVR0001131622C7AY64QH. It was originally destined for DN:/o=JOE/ou=MS/cn=CONFIGURATION/cn=SERVERS/cn=EXCHSRVR/cn=MICROSOFT PUBLIC MDB§DDA:EX=/O=JOE/OU=MS/CN=RECIPIENTS/CN=PUBLICFOLDERNAME8082D0C08082D0C08082D0C06979B64F00271F; (recipient number 1), and was to be redirected to. [MTA DISP:RESULT 14 136] (12)

Event Type: Information
Event Source: MSExchangeMTA
Event Category: X.400 Service
Event ID: 270
A permanent error has occurred with Entity /O=JOE/OU=MS/CN=CONFIGURATION/CN=SERVERS/CN=EXCHSRVR/CN=MICROSOFT PUBLIC MDB. Entity is a Message Object is a Normal Priority Message. Object: 06000033. Message ID: C=US;A= ;P=JOE;L=EXCHSRVR0001131622C7AY64QH Content length: 2422, External Trace information (first 100 bytes) = 3080638061801302555300006280130120000013034A4F4500003180800D3030303131333136323230345A8201008302060000000000, PDU dump reference 1 [MTA SUBMIT 12 74] (14)

The public folder that is affected is displayed in Event ID 290. To determine which public folder is affected, examine the Distinguished Name (DN) that follows the following text:

It was originally destined for

In the example of Event ID 290 in this article, the DN is:


The last CN of the string is the directory name of the public folder, which is composed of the folder name and a unique ID. In this case, the folder name is PUBLICFOLDERNAME.

If message tracking is enabled, you can determine who sent the e-mail message, as well as the SMTP address of the public folder.

To track the e-mail message, perform the following steps:

  1. Copy the message ID from Event ID 270 to the clipboard. In the Event ID 270 example in this article, the message ID is:

    C=US;A= ;P=JOE;L=EXCHSRVR0001131622C7AY64QH

  2. In the Exchange Server Administrator program, click Tools, and then click Track Message.
  3. If you are prompted to do so, select an Exchange Server computer, and then click OK.
  4. In the Select Message to Track dialog box, click Cancel.
  5. Click Advanced Search.
  6. Click By Message ID, and then click OK.
  7. Paste the message ID that you copied in step 1 in the Message ID box.
  8. In the Look Back box, type the number of days earlier that the event IDs 270 and 290 occurred.
  9. Click OK.
  10. Click Track to track the e-mail message.
  11. Click a tracking log entry, and then click Properties to obtain information on the sender and recipient of the e-mail message.

For additional information about e-mail message tracking, please see chapter 17 of the Microsoft Exchange Server Administrator’s Guide.

Additional query words: MTA error Public MDB XCON

Keywords: kbhowto KB251016