about MX record

I have 3 Mx record now

1. china barrauda IP
2. HK barracuda
3. china mail server

I want to know, if my point 1 die or I closed the port 25, normally it will go to point 2?
FInally all mail will go to point 3 Exchange server, it only accept point 1&2 IP.

can do?

thanks

本帖最後由 saiaskia 於 2014-2-21 09:58 編輯

正常得o既
但係咪point 1同2隻email gateway 會forward到隻exchange....
hk同china係咪build左vpn再係隻email gateway forward d email
point1,2係玩fail over?
做咩有3條record

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1 MX record for 1 mail server IP, so 3 mail servers have 3 MX records.

回復 2# saiaskia

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回復 3# tgo

都要等佢答....
佢point1,2 forward email去point 3 server, 咁都係2條reocrd

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定point1,2係front end, 3係back end...

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Normally, all MX records has a priority, other mail server will lookup through DNS, try first server with highest priority, if can't contact, will contact the next.....

回復  tgo

都要等佢答....
佢point1,2 forward email去point 3 server, 咁都係2條reocrd
saiaskia 發表於 2014-2-21 10:50

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if point 1 & 2 die...the mail will go directly to point 3 Exchange .

thanks

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回復 6# tgo


咁應該係2部gateway, 3條水喉~
2個mx record至去其中一隻email gateway~
咁先解釋得到點解要3個mx record~

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本帖最後由 saiaskia 於 2014-2-21 15:22 編輯
I have 3 Mx record now

1. china barrauda IP
2. HK barracuda
3. china mail server

I want to know, if my point 1 die or I closed the port 25, normally it will go to point 2?
FInally all mail will go to point 3 Exchange server, it only accept point 1&2 IP.

can do?

thanks
kitnba 發表於 2014-2-21 09:23



if point 1 & 2 die...the mail will go directly to point 3 Exchange .

thanks
kitnba 發表於 2014-2-21 14:01


完全俾你誤導了=.=
MX record: xxxcom IN MX 5 mail1.xxx.com
MX record: xxx.com IN MX 10 mail2.xxx.com
MX record: xxx.com IN MX 15 mail3.xxx.com

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set左priority就ok la~

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