refresh / expire

Reza Roboubi reza at linisoft.com
Wed Apr 3 23:24:40 UTC 2002



When we have a "refresh" rate, what is the purpose for an "expire" rate? 
Are the dns servers around the world not required to respect the refresh
rate??

Further, do refresh /expire mean:
        "lookup the domain's own dns servers after this interval"
or do they mean:
        "lookup the root .com/.org/.net/... servers after this
interval"??

Thank you for your help.
-- 
Reza Roboubi
Software Development Consultant
www.linisoft.com


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