On Wed, Jan 12, 2011 at 1:12 PM, William L. Thomson Jr. < [email protected]> wrote:
> Since the topic this month is DNS servers, I though I might get a > discussion going in advance on the long time rule of thumb/requirement > to have two or more DNS servers. > > I have never understood that for this reason alone. If you only have one > real server, who cares how many DNS servers you have. If that one server > is down/offline/unavailable, what good does multiple DNS servers do > anyone? > If there is no response to a DNS query many ISPs think it's okay to hijack your domain name and respond to the client with a response pointing to one of their servers. I would prefer my users to get a site is not responding message than "helpful" (i.e. advertising) links from their ISP. > > Not to mention one of the simplest, most straight forward, and reliable > server services I have ever setup or worked with is DNS. It has never > made sense to me why you need two DNS servers, ideally on separate > networks. Now I do understand the importance of DNS in the general scope > of things. But again, if your servers are down, what good does a bunch > of DNS servers do you? > > Case in point, firebirdsql.org seems to be down atm. But they have a > whole bunch of DNS servers (~6) doing name to IP translation. Which > considering you can't get anything by hitting the single IP address all > 6 name servers serve up. Almost moot that you get an IP at all from DNS. > > If servers are down, DNS being up is moot, and seems like its more > important to have multiple servers in general, not just DNS. But its not > necessarily common practice to duplicate and make everything redundant. > Very few if any sites will say ask for more than one IP address or > domain name for any service, like web, email, etc. But when it comes to > name servers, most always you are entering in two or more. > > -- > William L. Thomson Jr. > Obsidian-Studios, Inc. > http://www.obsidian-studios.com > > > --------------------------------------------------------------------- > Archive http://marc.info/?l=jaxlug-list&r=1&w=2 > RSS Feed http://www.mail-archive.com/[email protected]/maillist.xml > Unsubscribe [email protected] > >
