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Thunderbird stopped sending e-mails: error message - you are about to override how T-Bird identifies this site. This site attempts to identify itself with invalid information. Confirm security exception...

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E-mail stopped working. T-bird doesn't respond to "send e-mail" to address book. Something to do with an invalid information and encryption. T-Bird worked fine yesterday. This is a very recent development. Help. Thank you.

E-mail stopped working. T-bird doesn't respond to "send e-mail" to address book. Something to do with an invalid information and encryption. T-Bird worked fine yesterday. This is a very recent development. Help. Thank you.

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Please send a screenshot of the error message

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