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Lets Encrypt Internal Blacklist block

Go to solution Solved by Marcos,

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As of this morning i'm getting a lot of alerts across the orginization for:


For each alert the last bit of the address changes, but this part is the same:

They all also have a target address of :

Just wondering if there is more information on this, what might be causing it, if this is an indicator of a primary infection, etc.


Thank you!!



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Same here. One of the applications I use for a long time obviously tries to validate a letsencrypt certificate via OCSP. Looks like a false entry has made it to the internal ESET blacklist.

Edited by NFear
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Same problem here.  Either X-Plane 11 or some plug-in for it attempts to contact "...ocsp.int-x3.letsencrypt.org..." but gets blocked by ESET Internet Security.

Must be recent change as I've not changed X-Plane for several weeks.



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