[CentOS] Physically moving a mail server vs. cached DNS
Pete Biggs
pete at biggs.org.uk
Sat Jul 1 20:37:35 UTC 2017
> You should check to see if your old SOA is still showing themselves
> as authoritative for your domain. If they are, then anyone who uses
> their nameservers will still get the old record(s) for your domain.
>
> If they are still showing themselves as authoritative (which I think
> is the case) you will want to contact them to have them drop your
> domain from their server(s), or at least get your host records
> updated to point to your new servers.
>
Yes, that does seem to be the case.
Nicolas, if you make the query directly from the nfrance.com servers
you can see what we mean:
$ host -a microlinux.fr ns.nfrance.com
Trying "microlinux.fr"
Using domain server:
Name: ns.nfrance.com
Address: 80.247.224.77#53
Aliases:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2088
;; flags: qr aa rd; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 7
;; QUESTION SECTION:
;microlinux.fr. IN ANY
;; ANSWER SECTION:
microlinux.fr. 9600 IN SOA romeo.hebergement-discount.com. dns.nfrance.com. 2012081401 43200 1800 864000 9600
microlinux.fr. 9600 IN NS ns2.slconseil.com.
microlinux.fr. 9600 IN NS ns1.slconseil.com.
microlinux.fr. 9600 IN NS ns3.slconseil.com.
microlinux.fr. 9600 IN MX 10 mx1.nfrance.com.
microlinux.fr. 9600 IN A 80.247.228.60
;; ADDITIONAL SECTION:
ns1.slconseil.com. 432000 IN A 80.247.224.77
ns1.slconseil.com. 432000 IN AAAA 2a00:1a60:22e0:4d00::1
ns2.slconseil.com. 432000 IN A 80.247.228.129
ns2.slconseil.com. 432000 IN AAAA 2a00:1a60:21e4:8100::1
ns3.slconseil.com. 432000 IN A 81.25.194.8
mx1.nfrance.com. 60 IN A 80.247.229.29
mx1.nfrance.com. 60 IN A 80.247.228.29
So nfrance.com still claim SOA on your domain. At least they have a
relatively short TTL on it of 9600s so things will correct themselves
quite quickly once they drop the domain.
P.
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