| Event Id | 8516 |
| Source | MSExchangeIS |
| Description | The delivery of a message failed because the messages content type was incorrect. A non-delivery report is being sent to the messages originator |
| Event Information | According to Microsoft: Cause: When creating a Mailbox object using the IS/DS consistency adjuster, for example after restoring an old backup of the Exchange Server directory, the DELIV-EXT-CONTENT-TYPES attribute is not re-created. This mailbox may not be able to receive messages from an X.400 connector. Resolution: To resolve this problem, obtain and install the latest service pack for Exchange Server version 5.5. |
| Reference Links | IS/DS Check Does Not Recreate Deliv-Ext-Cont-Types for Mailbox |
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