Some time ago, for about a week in a row, my own domain name mailbox (Tencent's corporate mailbox) could not receive mail, and failed to find various reasons. No matter how I sent the message, there was no interception, no entry into the trash, and even complained about Tencent's corporate mailbox.

Knowing that one day the VPS of the blog expired, I went to DNSPod to change the domain name resolution, and found that it could not be changed, so I found a line of small words:

Crouching slot, this is the real reason why I received the email, but DNSPod did not send me an email or SMS reminder!!!

Later, I wanted to change the DNS resolution service provider. I found that domestic DNS was the same and could not provide resolution, so I had to find a foreign DNS service provider and finally chose Google Cloud DNS

GCD has 4 groups of NS, the first of which is accessed by the wall, and the others are accessed normally. The speed of each server is very fast.

ns-cloud-e1.googledomains.com.

ns-cloud-e2.googledomains.com.

ns-cloud-e3.googledomains.com.

ns-cloud-e4.googledomains.com.

The NS server of GCD adopts Anycast technology to ensure that users can get the resolution from the nearest server. It supports DNSSEC, 100% SLA, and all mainstream record types. The minimum allowable TTL setting is 1s

Finally, Google Cloud DNS is a charging service, each domain name is $0.2 per month