Exchange delete the email

User had complained that he received only 1 email instead of 2. When we do message tracking, there is 1 email was detected as duplicate on exchange. However the message id was different. Based on attachment, the duplicate cause by message id & client submit time? May i know what does the client submit time mean? It mean time when exchange accept the message? It is possible the application sent 2 emails with different message id with same time?
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Marwan OsmanCommented:
client submit time is the time when the message is submitted (sent) by the outlook client, and yes it is possible to have 2 emails with different message id in the same time (same time refers to the time when the message is considered submitted) and this usually happens when 2 or more clients are connected (online mode) using the same mailbox at the same time.

for more details please see the below articles:

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suriyaehnopAuthor Commented:
It is possible to get the duplicate email in eml format or outlook msg file?
Marwan OsmanCommented:
This is another question and must be asked separatly
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Marwan OsmanCommented:
Refer to the below link to make sure that you have used one of the listed methods and that it is well configured
Marwan OsmanCommented:
please ignore my last comment, it has sent by mistake, it is related to another question.
Jian An LimSolutions ArchitectCommented:
It is possible to get the duplicate email in eml format or outlook msg file?
past record cannot be retrieved unless you previously have journalling turn on.
suriyaehnopAuthor Commented:
thank you
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