In fact problem was that one of the new sites was not configured properly and the IP input of this site was taking precedence over all...
We made the changes in order to have /var/www into /home/www instead.
But I have a bigger problem now and I don't seem to figure out...
Many thanks for your answer, I'll try that very soon. It seems to be the perfect answer to my problem ;)
ISPConfig is installed but var/www is too small the main partition being home/
In order to have all the files that weight in home/ I'm...
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