[操作疑難] Domain 高手請入

Let say 如果有部mail server
A Record
Mail.abc.com  1.2.3.4     Isp1
Mail.abc.com  5.6.7.8    Isp2

Mx record
@ mail.abc.com

如果isp1 斷左
Email 仲可5可以透過isp2入黎?

回覆 1# lung510


A record
mail.abc.com 1.2.3.4
mail2.abc.com 5.6.7.8

MX record
@mail.abc.com 5
@mail2.abc.com 10

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回覆  lung510


A record
mail.abc.com 1.2.3.4
mail2.abc.com 5.6.7.8

MX record
@mail.abc.com 5
@mai ...
gozilla 發表於 2019-2-27 22:10



    But how the user access the outlook?since they map the ip address to mail.abc.com?
They need to manually change to mail2.abc.com?

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A record
mail1.abc.com 1.2.3.4
mail2.abc.com 5.6.7.8

MX record
@mail1.abc.com 5
@mail2.abc.com 10

CNAME record
mail.abc.com mail1.abc.com

You may consider manual update CNAME when ISP1 is down or deploy DNS failover

https://aws.amazon.com/about-aws ... lover-for-route-53/

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點解會係兩個server, 你咁咪自己搞亂
你應該做一隻 backend, 兩隻 frontend, 無論由邊隻frontend 入, 都會搵返同一 set mailbox

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