If you are talking about strictly http, then you are probably right. If you are hosting any email, then this isn't the case. A live DNS but dead mail server will cause your mail to queue up for a later resend on the originating mail servers. A dead DNS will cause the mail to bounce as undeliverable. (Oh, and if any of your subs are on mailing lists, they will be unsubscribed en masse. A nice way to challenge your call center...) John At 12:06 PM 9/29/2005, Matthew Crocker wrote:
I just tested it from a Verizon DSL host and it worked.
You might want to consider reading RFC 2182 though, particularly the part about geographically diverse nameservers.
Yeah, yeah, that is overrated. If my site goes dark and my DNS goes down it doesn't really matter as the bandwidth and the web server will also be down. Having a live DNS server in another part of the country won't help if the access routers handling the traffic for the T1 to the school is also down.
Geographically diverse name servers sounds great in theory but for this application it won't gain any redundancy.
-- Matthew S. Crocker Vice President Crocker Communications, Inc. Internet Division PO BOX 710 Greenfield, MA 01302-0710 http://www.crocker.com