Zitat von Nitin Mandolkar <nitin.mandolkar@xxxxxxxxxxxxxx>: > Dear Net Filter Team. > > > > Subject : SMTP Nating required? > > > > AS we install Squid proxy server on red Hat Linux 9. > > Squid is working fine on Linux machine and doing his > > Job good. > > > > But on client machine when we configure outlook express > > With SMTP server as mail.xyz.com and pop3 server as pop.xyz.com > > It is not resolving that names. It is giving the error. But with Web mail > client > > I can check my mail. > > > > How can I resolve this problem.. You need a working DNS to resolve the names. If your Squid box can resolve install a caching NS and point your clients to this machine. So far nothing related to iptables/netfilter?? Regards Andreas