So here's my little story. I have to relay mail from our MS Exchange Server to the qmail-server (This server also beeing the firewall). I did setup everything with tcp-env according to point 5.4 in the FAQ But this doesn't work (at least not with my RedHat Linux) The RELAYCLIENT variable just doesn't get set. Martin Jespersen was a great help in finding the problem. My simple solution: Use tcpserver. This was actually a no-brainer. Now (nearly) everything works fine. So, why not update this in the FAQ? instead of using tcp-env I now have a /etc/tcp.smtp file in which I have the IP-adresses of the servers who are allowed to relay. I wrote a little startup-script for tcpserver and that was it. I already moved one other service from inetd to tcpserver. I'll probably shutdown my xinetd alltogether. Ciao Leo