Sorry I do not speak English, I am using a translator to understand, I do not understand your problem.
I know that the solution seems weird, must put his email, I repeat, I have tested on several sites, with the amendment, putting another email and it works, I have received the mail.
Despite the fact to his email, it does not change the envoyur email, well, hers in the mail received.
Forgiveness but this change does not come with the latest update, I have installed CF7 on a site a few months ago, by default I have this configuration, the only change with the last update, indicates the old configuration as an error while before it did report.
But despite the error the plugin works, isn’t it, so do not take into account the error message.
I did not say that Richard was wrong, it offers 2 plugins that I do not use and I do not want to use, I am forced to install?