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Can not add Security Exception for 127.0.0.1
I am trying to get my protonmail account set up in Thunderbird through the ProtonMail bridge. The server for IMAP and SMTP is simply 127.0.0.1 because it is going through the bridge for encryption. However, I can't receive any email, and when I try to send email from the protonmail address in Thunderbird, it gives me the following message:
Sending of the message failed. The certificate is not trusted because it is self-signed. The configuration related to 127.0.0.1 must be corrected
When I try to add a server exception in the Certificate Manager of Thunderbird for Location: 127.0.0.1, the "Confirm Security Exception" and the "Permanently store this exception" remains greyed out. It won't let me add this so I can use Thunderbird for Protonmail. After clicking on "Get Certificate", it says "No information available. Unable to obtain identification status for this site."