-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 06/18/2012 12:19 PM, Tom Diehl wrote: > On Mon, 18 Jun 2012, Alexander Gurvitz wrote: > >> Can someone enlighten me on the following scenario (I guess it's >> explained somewhere, but can't find the info.): >> >> example.com was served by ns.OLDprovider.net example.com owner >> wants to move his domain to ns.NEWprovider.net oldprovider.net is >> not cooperating, and continues to serve example.com 172800 NS >> ns.OLDprovider.net (*.gtld-servers.net and ns.newprovider.com now >> serve example.com 172800 NS ns.NEWprovider.net) >> >> Recursive resolver ns.isp.com queried for www.example.com every >> few minutes, and currently have example.com 45892 NS >> ns.OLDprovider.net in it's cache. www.example.com have TTL of >> 3600. Thus each hour ns.isp.com queries ns.OLDprovider.net, with >> each query gets new NS record, and... refreshes the NS TTL ? >> >> Will ns.isp.com EVER query ns.NEWprovider.net ? >> >> I'd be happy to know how BIND behaves, but also how other servers >> may behave in this case. > > It is not a question of how bind behaves. It is a question of how > does dns work. Bottom line is, setup nameservers with $NEWPROVIDER > and change the nameserver records with your registrar and move on. > All will be well when the ttl's time out. > > Until the ttl's timeout, resolvers with the old nameservers cached > will still query them. Once the ttl's time out the new servers will > be queried. > > Hope this helps,
Incidentally I use NameCheap as a registrar, and have noted that their help pages are pretty easy to understand and explain this process in a helpful way. You don't have to be a customer to look at that stuff. - -- - ---- _ _ _ _ ___ _ _ _ |Y#| | | |\/| | \ |\ | | |Ryan Novosielski - Sr. Systems Programmer |$&| |__| | | |__/ | \| _| |novos...@umdnj.edu - 973/972.0922 (2-0922) \__/ Univ. of Med. and Dent.|IST/EI-Academic Svcs. - ADMC 450, Newark -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk/fYMsACgkQmb+gadEcsb6d0gCeO5kMKwJkBrurVXICv9cAwHnb aZAAnAsOj6alnZtNiuoCjKgvexlAp6Xw =wI6N -----END PGP SIGNATURE-----
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