Thunderbird / security software interaction

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Joined: January 18th, 2010, 4:25 pm
Location: Pacific Northwest, USA

Post Posted August 11th, 2017, 12:25 pm

I installed Kaspersky Internet Security 2018 a couple days ago and got a popup from Thunderbird saying "You are about to override how Thunderbird identifies this site ... The certificate is not trusted because it hasn't been verified as issued by a trusted authority using a secure signature". I now understand that KIS sets itself up as a man-in-the-middle to do scans of the email content. (This is apparently fairly standard behavior for security products.)

I now understand that I could have provided Thunderbird with Kaspersky's self-signed certificate. Instead, I clicked on "Permanently store this exception" in Thunderbird's popup. I don't know what action Thunderbird performed when I did this, but I don't see the Kaspersky certificate in Thunderbird's list of certificates so I suspect I want to undo it. How do I do that?
Patrick O'Keefe
Win10 x64 Pro, FF 60.0.1 TB 52.1.1


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Post Posted August 16th, 2017, 10:51 am

Moving to Thunderbird Support.


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Post Posted August 22nd, 2017, 4:45 am

Click on "security" in the account settings, and then "manage certificates". I suspect the certificates you care about is in the authorities (CA certificates) and servers tabs.

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Post Posted September 6th, 2017, 1:55 am

the solution is here : viewtopic.php?f=28&t=3033119

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