[CentOS] OT: free DNS service?
jdmls at yahoo.com
Mon Jan 18 16:08:28 UTC 2010
From: R-Elists <lists07 at abbacomm.net>
> > I have been using a free DNS service for the past seven (7) years.
> > This morning, at 4 A.M., , I changed the "A" record for one
> > of my web sites, to point to an IP address on a different
> > server, so I could test. After watching the TTL count down
> > from 3600 to zero, with the "dig" command, it then reset to
> > 3600, but still resolved to the
> > original IP address. :-) I set the "A" record back to the original
> > IP address and filed a Support Ticket with that company, but
> > if they cannot get this to work properly again, I need a new
> > DNS service that is free. Recommendations? (BTW, the Domain
> > is registered with GoDaddy, but not hosted there, so it
> > appears I cannot use their "Total DNS" service). TIA!
> so, when you make a dns change properly on a serving system, it still has to
> get distributed and that doesnt mean that every machine that has a resolver
> or cache has changed at that instant... it can take more time than you
Indeed; there is a TTL parameter.
If you want the changes to be propagated 'fast', you set the TTL to a low duration.
But DNS caches can bypass it if they choose to...
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