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rscaramelo 3 Oct 2017 12:01 PM

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?

BritTim 3 Oct 2017 01:23 PM

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?

n5bb 8 Oct 2017 04:18 AM

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

jtmusson 9 Oct 2017 07:24 PM

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.

DavidPaine 22 Jan 2020 06:54 PM

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.

ankupan 22 Jan 2020 09:10 PM

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.

SideshowBob 22 Jan 2020 11:18 PM

Quote:

Originally Posted by DavidPaine (Post 612925)
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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