Thread: DNS settings?
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Old 8 Oct 2017, 03:18 AM   #3
Intergalactic Postmaster
Join Date: May 2004
Location: Irving, Texas
Posts: 8,374
Each DNS setting has an associated Time To Live (TTL) value (specified in seconds). The TTL value tells any process which needs to use a DNS entry how long that particular entry can be cached. So if the TTL value is 86400 (one day) for a DNS entry (NS, MX, A, etc.), any changes you make might be ignored for one full day due to caching.

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