Allen, Jack wrote: <snip> > No, my ISP does not provide a hostname. > > Maybe I did not explain the problem clearly. I have a cable > modem connected to a router. The ISP provides an IP Address to the > router via DHCP. That would be on the WAN side of the router. On the LAN > side of the router I am using 10.11.12.X for my systems. The router is > 10.11.12.254 and my Linux system is 10.11.12.1 and the PCs are > 10.11.12.2 and 10.11.12.3 and the home automation device is 10.11.12.4 > and TIVO is 10.11.12.5. I have DNS (named) running on my Linux system > with the domain name of my_domain.network. The Linux system is setup to > relay email to the ISP. When the Linux system connects to the ISP mail > servers it tells it the connection is from linux.my_domain.network which > is validated and determined not to be a valid domain, which it is not. I > want the ISP mail server to see the connection form linux.my_domain.net > which is a valid registered domain. But using masquerading is not doing > that. Hmmm, is it complaining about the domain, or about the server's fully qualified name, and complaining the server's unknown? <snip> mark -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list