We do queue mail for retry when a temporary delivery error is received on the first attempt, however, retries are not logged in Message Audit. For additional information on why the message failed, and the results of retry, please contact your support team and request logging details for the message in question. Please note, we maintain logging details for a period of 7 days, after that logs age off and are no longer available.
System Support Specialist
SaaS Email and Web Security
McAfee. Part of Intel Security.