Hello all By changing the ports, I managed to run Zarafa ISPConfig is set. The only thing I miss is the syncro between the base to give ISPConfig is Zarafa, what we say in my zarafa as possible, especially, probably make it work with MySQL. If you sync, it's Zpush with ISPConfig 3, I said that it is not possible to do with Zarafa. I'm sure all this is in the Postfix configuration? We will stop playing guessing, anyway thank you for your help. MM