> I am planning on moving our server this weekend and will
> have to change our
>IP's for 50+ websites and email. This is a question for the DNS guru's. Is
>there a way to force these new IP's to be sent out to all the other DNS's
>out there.
Reduce your all your TTL's to 1 hour, now. That means that no old
ip's will be cached by this weekend. It also means your NS's will be
hammered with much more query traffic until after the switch back to 1D.
The key switchover point is when the HOST / NS records records are
modified in the gtld-servers.net. As soon as that happens, the root
servers will start handing out glue records / A records for your NS's
with the new ip's for the NS's, to which other DNS will go to find
obtain your domains' records. The new HOST records are loaded into
the roots every early morning EST, as in the whois responses:
"Database last updated on 28-Feb-2001 02:58:56 EST"
>I know from experience that many DNS's do not refresh very
>often.
The "should" purge old RR's when the TTL is expired, and get new RR's
from the authoritative NS's. So with your TTL's at 1H, no DNS should
be "behind" your NS's by 1 hour max.
Len
http://BIND8NT.MEIway.com : Binary for ISC BIND 8.2.3 for NT4 & W2K
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