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Event ID: 8526 Source: MSExchangeISPrivate

Level
Description
The delivery of a message failed because messages are embedded too deeply within this message. The details are:
From:/O=<ORGANIZATIONNAME>/OU=<SITENAME>/CN=<RECIPIENTS>/CN=<RECIPIENT>
Subject:<subject> Message Id:<message ID>.
Comments
 
As per Microsoft: "This problem may occur as a result result of Inbox rules, autoreplies, and so on". See ME247425 for more details.

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