Comment 1 for bug 847485

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William Grant (wgrant) wrote :

By comparing logs for various runs, I can see that the error is not fatal. It just causes one log message to disappear. That's this one:

    log.info(
        'Attempting DKIM authentication of message id=%s from=%s sender=%s'
        % (signed_message['Message-ID'],
            signed_message['From'],
            signed_message['Sender']))

Looks like From/Sender may be non-ASCII bytestrings, and logging is trying to encode them to UTF-8?