Hi, thanks for the help but it's now solved. I just reinstalled my joomla from scratch and it directly worked well. I understood that actually, the message came from the fact that the facebook robot didn't scan my pages yet. After some few hours, the message disappeared and appears now only on the most recent posts.
Thanks for reply !
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Re: warning http://www.mydomain.com is unreachable
8 years 8 months ago #5900