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TTL Settings

Discussion in 'Plesk 9.x for Linux Issues, Fixes, How-To' started by danliker, Feb 1, 2010.

  1. danliker

    danliker Silver Pleskian Plesk Certified Professional

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    i have 2 problems with the TTL Entry in Plesk DNS-Settings.

    the first problem is, why is 0 seconds not possible ?
    (as i know this is used for no cache)

    the second one is that a domain alias does not take the ttl of the main domain !?
     
  2. IgorG

    IgorG Forums Analyst Staff Member

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  3. danliker

    danliker Silver Pleskian Plesk Certified Professional

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    ok, and what about the 0 seconds entry for ttl ?
     
  4. IgorG

    IgorG Forums Analyst Staff Member

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    I have forwarded your question about 0 TTL to developers. I will update this thread with their answer as soon as I receive it.
     
  5. IgorG

    IgorG Forums Analyst Staff Member

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    It is not recomended to set TTL value to zero, see http://technet.microsoft.com/en-us/library/dd197427(WS.10).aspx :
    "In general, never configure the TTL to zero. The difference between a setting of 0 or 60 is minimal to the accuracy of the record, but when the TTL is set to 0, there is a significant impact on DNS server performance because the DNS server is constantly querying for the expired data."
     
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