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How file reputations retrieved and stored in TIE?

Hi There,

TIE 3.0/DXL 5.0.1/ENS 10.6.1 oct update

In my lab I created an unknown file using hex editor then executed it, but some times it cant be found in ePO> TIE Reputations page.

I know ENSATP will collect the metadata of a file and send to TIE server via port 443 for reputation check, then TIE will search if it already has the file reputation in it's database, if not, TIE will ask GTI via https://tieserver.rest.gti.mcafee.com and send a response.

I suspect my TIE sometimes cant receive the response from GTI and nothing will write to database or send response to ENSATP, and indeed in my ePO> TIE Topology Management page, I saw an error saying "Time since last successful GTI communication exceeds the maximum defined Error threshold.".

In the tieserver.log I can see many warnings like below:

Snipaste_2020-02-12_04-33-06.png

What're the warnings mean? I actually opened a similar case to support but it was not resolved.. 

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