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  1. #1
    Pandora Tipem's Avatar
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    Weird DNS server switch... troubleshooting?

    Hi,

    I recently switched my site tdnforums.com over to a new server about a week ago. Some folks are still complaining that they are viewing the forums on the OLD SERVER. Perhaps DNS is taking a long time to switch over but get this... for many people tdnforums.com is switching BACK and FORTH between the old server and the new server. So, on some visits it'll resolve to the new server... on other page refreshes you'll be viewing the forums on the old server. What the heck?! This has actually happened to me a few times myself so I know that they aren't crazy.

    Why is DNS doing this? Sometimes the site resolves on the old server and then the new? What's going on here? Why isn't it flipping over 100%? Are there any things I can check as troubleshooting, or is this normal? I've had some long DNS switches before but never this "back and forth" stuff...

    Thanks in advanced.
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  2. #2
    SitePoint Zealot Scott.Mc's Avatar
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    This is because your other nameservers are reporting a different IP.

    Name Server: NS1.EXTREMAHOSTING.COM
    Name Server: NS2.EXTREMAHOSTING.COM
    Name Server: NS2.MYDYNDNS.ORG
    Name Server: NS3.MYDYNDNS.ORG
    Name Server: NS4.MYDYNDNS.ORG
    Name Server: NS5.MYDYNDNS.ORG


    The first two nameservers (EXTREMAHOSTING.COM) are reporting: 66.230.199.198 while the others (MYDYNDNS.ORG) are reporting: 70.60.138.26
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