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Bladey001Flag for United Kingdom of Great Britain and Northern Ireland

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Can't open this item your digital ID name cannot be found CANNOT BE FOUND BY THE UNDERLYING SECURITY SYSTEM

Dear Experts

I'm really confused with the problem we currently have and i'm really hoping someone can help us out.

We've got a few users who use mail certificates in order to use mail encryption with their clients. Recently they were renewed as they were expiring; this happened successfully. Our users then had to re-establish contact info with their clients by sending digitally signed emails to and from, updating contacts on both ends in order to allow mail encryption between the 2 parties.

The problem we have is sometimes we're unable to open emails getting the error
"CAN'T OPEN THIS ITEM YOUR DIGITAL ID NAME CANNOT BE FOUND BY THE UNDERLYING SECURITY SYSTEM"

Just to take an example, one specific client (john.smith@companya.com) sends 3 encrypted emails to one of our users (user@mycompany.com)
 1 In the morning opens up fine
 1 In the afternoon gets error
 1 ten minutes after opens up fine

Same sender, same recipient, same day.
What on earth could be going wrong?
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greenhacks
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Were all that 3 emails in your example new?
I think if old emails which were signed before renewing the certficate, might be causing some problem.
Can you ask the sender to send atleast 5 to 6 NEW emails, and see if they all open up.
Then ask sender to send very old signed email as a reply or forward and see if that opens up.
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ASKER

These emails are all new with the certificate having been renewed a week ago now
Have you checked/matched the certificate details which came will all 3 emails?
I can't open them or get to the properties how do i check the certificate details?
Not sure of any way. Such messages will not even let us see message options of that email.
ASKER CERTIFIED SOLUTION
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Bladey001
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