Ulrich Mierendorff a écrit : > [snip] > Ok, I am now using ex1.example.com as myhostname and it works perfectly. > Mouss, Magnus, thank you so much! > But I do not understand one thing: Do I also have to add ex1 to DNS? >
yes. and make it resolve to the (public) IP of server B. Otherwise, your mail may be blocked (even if most sites won't today, they may do in the future).