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Weird DNS Problem

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  • #1360
    Vincent Gentile

    I recently launched a client site. I changed the domain name servers on Monday (01/23) evening and launched from the staging domain to the live domain on Tuesday morning (01/24), changing hosts from Yahoo to Hostgator. I re-created the clients e-mails and everything is working fine EXCEPT……

    There is one company that my client cannot receive e-mails from …? The e-mails are still going to Yahoo and they have to login to yahoo to get those e-mails…….Hostgator says the company has to refresh their exchange server, I called the IT guy at the company and he says he has rebooted the server…? Could it be the domain is still propagating…?

    Very Weird…….Any thoughts on this…..?

    Kevin Cristiano

    Can you share the domain? I have seen DNS get stuck for up to 72 hours. In addition, the company needs to flush the Dns cache on all of their domain controllers.

    Obviously this is way too long.

    Vincent Gentile

    The site domain is and the company that sends the e-mails we can’t receive is:

    So you mean the needs to flush the dns…?

    Kevin Cristiano

    Yes, needs to flush their DNS.

    In addition:

    I just ran a report on your DNS.

    Your SOA record [TTL=86400] is:

    Primary nameserver:
    Hostmaster E-mail address:
    Serial #: 2012012401
    Refresh: 86400
    Retry: 7200
    Expire: 3600000
    Default TTL: 86400

    These are very high refresh and expiry values. I try and get the Refresh, and TTL to 3600 (one hour) at most. The expiry value computes to almost 6 weeks.

    Your MX record lives for 4 hours (TTL 14400) which I would reduce as well.

    While these values are high, The domain should not be still propagating.

    I believe that if flushes the DNS all should be good. They need to flush both their exchange server and the AD servers (they handle DNS for Exchange).

    Vincent Gentile

    Kevin – Thank You……..Much Appreciated.

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