Today in the morning I had an total crash down of the Server by an electric power blow from outsite of the building! The Server as well as 3 other Desktops were totally damaged include a total of 4 HDD's in Server. OK, I got a new Server up and running again with Debian 7.3 and ISPConfig 3.xx! So far so good! But: I could not get the mail working! Started checking the logfiles for Mail Server and found that there mainly totally unknown addresses show up. On my own, I could not send or receive any e-mail now! This is a totally new installation of the Server with ISPC on an new MB, new HDD, even CPU and Memory are New. What would be the best to do? I've off the server at the moment and May do a 2. new installation in the morning tomorrow again! Any Idea what I could/should do? Thanks.