Hello,
Thanks a lot for your answer. It helped me a lot.
In the past I configured mailjet, but not really used it for my newsletter. I did not imagine that it was used when sending mail from my blog.
I have de-activatided mailjet.
I have configured SMTP Mailer extension and now it’s working fine without any redirection.
Thanks for Speakout! a very nice and useful plugin.
Regards.
Marc