Problem solved Hello Falko, The problem is solved. You were right, It was NOT coming from the Tproxy daemon. I re-installed my server from scratch, and i think that the problem was coming from my hostname ! As a matter of fact, during the first install, i forgot to give a name to my server, so my hostname was: myprovider.com instead of being: jupiter.myprovider.com The other possibility was that, as my server had been hacked, something was installed that i did not see. Anyway, it is working fine now. Thanks for your help, Guinone