[nylug-talk] DNS servers

[Ajai Khattri]

On Wed, 17 Oct 2007, Chris Knadle wrote:

>    Turns out this can be just as prevalent a problem for companies that try to 
> run a room of servers using the ISP's DNS server to answer queries.  Running 
> a local DNS server [caching only at minimum] is usually a very good idea for 
> server rooms; it usually makes a very notable improvement in performance of 
> all services.

Running dnscache (based on tinydns) is good (I run it to handle local 
lookups on external servers too, especially mail servers).

> This type of setup is more difficult to do for larger ISPs

Err, yeah - you need to allow external queries so other servers can look 
up important things like MX records to get email to your customers...


--
Aj.