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Event ID: 1026 Source: MSExchangeISPrivate

An error occurred with the following call stack:
   EcTferOutMessage():  <MAPI error code>
   EcCreateOMTferOut():  <MAPI error code>
   EcMTSIDFromSz():  <MAPI error code>
As per Microsoft: "The Exchange Server information store returns an NDR for messages whose PR_MESSAGE_SUBMISSION_ID (MTSID) contain a slash (/), semi-colon (;), or quotation marks (") in the MTSID parts. " See the link below for more detail
See ME238119, ME246076 and ME185136 for a description of various MAPI error codes.

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