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Old 3 Oct 2017, 12:01 PM   #1
rscaramelo
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Join Date: Jan 2017
Posts: 46
DNS settings?

"Important! DNS settings will only take effect if you point your nameservers to
FastMail. Learn more."

Thought I did this correct but apparently not. Using google domains. Help?
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Old 3 Oct 2017, 01:23 PM   #2
BritTim
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How long did you wait after changing the nameservers before testing? Redirection of the DNS is not instant. Also, have you gone back to check that the nameservers change actually stuck, and did not fail to take affect because a confirmation was omitted or something?
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Old 8 Oct 2017, 04:18 AM   #3
n5bb
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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.

Bill
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Old 9 Oct 2017, 07:24 PM   #4
jtmusson
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Join Date: Dec 2014
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There's a website you can use to check whether DNS changes have propagated around the world:

https://www.whatsmydns.net

Handy to check or confirm that any DNS record changes you've made have propagated. This will illustrate the TTL delay in action.
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Old 22 Jan 2020, 06:54 PM   #5
DavidPaine
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DNS Propagation

I wanted to suggest another similar but somewhat more useful tool to check your DNS Propagation https://dnschecker.org/. You might want to give it a try.
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Old 22 Jan 2020, 09:10 PM   #6
ankupan
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Join Date: Apr 2004
Posts: 765
google domain has some problem and will no support - in mx.

I tried it some time back, but not good expereince.

after 90 days, I moved my domain to previous registrar and all work good.

So my experience says that google don't support - in MX records.
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Old 22 Jan 2020, 11:18 PM   #7
SideshowBob
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Quote:
Originally Posted by DavidPaine View Post
I wanted to suggest another similar but somewhat more useful tool to check your DNS Propagation https://dnschecker.org/. You might want to give it a try.
I don't see why this is useful. It tells you about largely irrelevant public caches rather than the local caches used by mail-servers.

If you run the test too early you risk bringing the old NS records into those public caches. If anything relevant is using one of them, you could delay its switchover for 48 hours.
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