Dear Tom. > > # Do not remove the following line, or various programs > > # that require network functionality will fail. > > 127.0.0.1 localhost.localdomain localhost > > 127.0.0.1 calimero.local calimero > > ::1 localhost6.localdomain6 localhost6 > > > > Lots of replies to this already. The critical thing to understand is > that it is the network interfaces that have names not the box. > > Sendmail and some other tools look for host names that have at least > one dot in them. Thus localhost.localdomain gets paired with localhost > as a CNAME.
I would suggest to use localhost localhost.localdomain (if it's really required) instead. 127.0.0.1 should resolve to localhost only (as mentioned before). > A better line would be > 127.0.0.1 localhost.localdomain calimero.local calimero > or perhaps... > 127.0.0.1 localhost.localdomain calimero.localdomain calimero > > These make it clear that you want all four names (long and short) associated > with 127.0.0.1 See above. Please do not add hostnames other than localhost to 127.0.0.1. Add the hostname to your network interface, instead. > Having HOSTNAME set in places like > /etc/sysconfig/network > with a line like: > HOSTNAME=calimero > has advantages in lots of ways... with wireless and other dynamic situations > where plugging a wire in or wired connection to hot spots and more are > possible > keeping the 'hostname' handy makes sense for a handful of reasons. Link > local > zeroconfig .... It also permits the host to have the 'short' CNAME of > calimero > and still discover its fully qualified (lots of dots) host name. If you just set HOSTNAME in /etc/sysconfig/network the hostname is set during boot but is not resolvable. Therefore you should make sure that /etc/hosts and HOSTNAME are set. The last one is optional (see ifup-post in previous postings) but good-style. Best Regards Marcus _______________________________________________ CentOS mailing list [email protected] http://lists.centos.org/mailman/listinfo/centos
