DNS Upstream refresh

Discussion in 'Linux Networking' started by billis, Feb 20, 2007.

  1. billis

    billis Guest

    After an, otherwise, succesful migration the MX record of the BIND
    nameserver ended up like this:

    domain.com. IN MX 10 mail.domain.com

    instead of:

    domain.com. IN MX 10 mail.domain.com.
    (that dot at the end.....sigh)

    Now I need to refresh the dns information upstream cause some MX
    servers out there send mail to
    mail.domain.com.domain.com instead of the correct address.

    I've corrected the typo, lower the refresh to 5 minutes for the master
    zone, tunred on notify for the zone. Is there anything else I can do
    to speed up the update?
    Specifically is there a way to access an internet dns server and
    specifically tell it to retrieve the new zone information?

    thx in advance,
    billis, Feb 20, 2007
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  2. No, you'd have to get the whole Internet (or at least everyone who sends
    you mail) to drop their caches.

    For future reference, drop your TTLs to 5-10 minutes a day or two before
    making changes like this, to mitigate the effect of errors. Once you are
    satisfied everything is working, raise them again.

    You could create an A record mail.domain.com.domain.com with the address
    of your mail server. As long as your negative caching TTL is sensible (it
    should be around 10 minutes) this should get your mail flowing again.

    Regards, Ian
    Ian Northeast, Feb 20, 2007
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