Users are complaning about getting less emails than usual during a period of time.

I have used the exchange tool to run a mail flow troubleshooter and Message tracking.

I was able to send successfully emails to the mailbox using the mail flow troubleshooter, Also I can see emails sent to her during the period of time that the users claimed that did not received the amount of mails that usually does.   Is there any other way to see if mail were bounced bad to clients whiting the exchange server.  I have check the event viewer and the only warning message I get is saying that the maximum connection per source is 20 and that has been reached by X source IP.

Thank You,
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Simon Butler (Sembee)ConsultantCommented:
Not really much you can do to prove a negative. Logging on the Exchange server could show emails being bounced, but that is about all. If you are looking at a historic event, then unless you had logging enabled there isn't anything else that you can do. If message tracking doesn't show any additional messages than what the user received then they were not received by Exchange and then blocked. Therefore they either bounced before delivery or were never even sent.


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ckeshavSr. Infrastructure SpecialistCommented:
You need to check 2 things here. Is it Internal company emails or external mails from outside.
If it is external mails, then you need to check the Logs on Edge server or other Relay server used in your environment and confirm for any bounce.
Also perform mail tracking at all the HUB servers in the site where the user Mailbox is located.
wegee2Author Commented:

Thank you for your fast response.  Yes, logging is enable and not bounced messages were showed during the period of time that the user claimed to no received emails.
wegee2Author Commented:

The email server is all in one server. I did a mail tracking test and all showed correctly.  Thank you for the assistance.
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