Odd problem with DNS and IP change.
tajudd at gmail.com
Wed Mar 4 06:04:03 PST 2009
On Sat, Feb 28, 2009 at 4:30 PM, Derek Ragona <
derek at computinginnovations.com> wrote:
> At 09:40 AM 2/28/2009, Andrei Brezan wrote:
>> Hello list,
>> I have a strange problem and I don't know what to relate it to. My
>> changed my IP from (eg) 10.1.1.1 to 220.127.116.11. I have changed my zone
>> files to reflect that change.
>> "dig -t mx domain.com" results in mail.domain.com 3600 IN A 18.104.22.168
>> (the new ip). However when i try:
>> "ping mail.domain.com" it tries to get to 10.1.1.1 the old ip and gets
>> time to live exceeded fro an ip along the route. When i try to ping
>> domain.com it gets all ok as it pings the new ip. I've also tried dig
>> @(forwarders in named.conf) and they to got the correct mx dns entry for
>> In rc.conf i have hostname="mail.domain.com" (eg), i haven't
>> it, i'm thinking it's something related to hostid or hostuid but i don't
>> know where to search for this topic.
>> If anyone has a clue what to try or where to look upon this
>> please shed some light.
>> Thank you.
> Check /etc/hosts which is used before DNS.
Depends on your nsswitch.conf(5) setup. If dns is specified before files,
DNS will be checked before /etc/hosts will be.
It's all configurable and it's important to know the difference
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