Message Tracking problem in Exchange 2016

Dear Wizards, I got this EventID when tracking the mail from Sender to Recipient in the same domain: (MS Exchange 2016)

Timestamp              EventId          Source        Sender                Recipients            MessageSubject       
---------              -------          ------        ------                ----------            --------------       
4/13/2018 11:31:02 AM  HAREDIRECTFAIL   SMTP          thinh.v@xxx.com  {hai.tm@xxx.com} FW: LAM    
4/13/2018 11:31:03 AM  RECEIVE          SMTP          thinh.v@xxx.com  {hai.tm@xxx.com} FW: LAM  
4/13/2018 11:31:03 AM  AGENTINFO        AGENT         thinh.v@xxx.com  {hai.tm@xxx.com} FW: LAM     
4/13/2018 11:31:03 AM  SEND             SMTP          thinh.v@xxx.com  {hai.tm@xxx.com} FW: LAM

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What is HAREDIRECTFAIL ? In this log, can we confirm that the message was delivered or not? If not, how can we confirm that? Many thanks!

LVL 5

DP230Network AdministratorAsked: 2018-05-08

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LVL 22

Wayne88Commented: 2018-05-08

"HAREDIRECTFAIL indicates that a shadow message failed to be created. This means that the transport service failed at trying to make the specific message redundant (while in transit) at another Exchange 2013 mailbox server (transport service) for whatever reason, probably stated in the source-context field.So, the mentioned redirection isn't like forwarding at all but rather a protection mechanism for messages in transit. After the message has been successfully delivered, it's called Safety Net. Basically your safe guard isn't functioning for whatever reason, but hopefully message delivery is."

I would confirm that the message is sent if it's not in the queue. You would get an NDR if the message wasn't delivered.

LVL 24

timgreen7077Exchange EngineerCommented: 2018-05-08

HAREDIRECTFAIL - is A shadow message failed to be created. The details are stored in the source-context field.
This doesn't stop the mail from being successfully delivered. Its just a redundant copy of the original message but delivery doesn't depend on that.

LVL 17

Jason CrawfordTransport NinjaCommented: 2018-05-08

You can't tell from the data you're providing although it does look like a successful handoff to the recipient server. You should add RecipientStatus to your output so you can verify a 250 response was generated for the SMTP Send event.

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LVL 17

Jason CrawfordTransport NinjaCommented: 2018-05-08

Glad I could help. Take care :)