asked on

Exchange setting

We're using Exchange for mail server (Internet IP Address 64.0.0.1 NAT 192.168.1.1)

(MX record: domain.com)
domain.com MX preference = 10, mail exchanger = mail1.domain.com
(A Name)
mail1.domain.com internet address = 64.0.0.1

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Question 1: (For a single Exchange server)
Can I add one more iP address for mail routing redundancy when 64.0.0.1 IP address is blacklisted)
1. Internet IP Address 64.0.0.2 NAT 192.168.1.1
2. (New A Name) mail2.domain.com internet address = 64.0.0.2
3. domain.com MX preference = 30, mail exchanger = mail2.domain.com,

is it possible? If not, any good suggestion please?
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Question 2:
For DR (single domain: domain.com)
Site A: Master Exchange (Internet IP Address 64.0.0.1 NAT 192.168.1.1)
Site B: Standby Exchange (Internet IP Address 68.0.0.1 NAT 192.168.101.1)

What I should prepare for mail server switching?
Site B will get all email when Master Exchange server down
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Question 3:
What's the good solution for Exchange server redundancy?
- Clustering ?
- Front-End+Back End Exchange (If Front-End Exchange down, how to auto switch to Back-End Exchange to pick up the online job?)
- Or others
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Thanks !

Wilder_Admin

1.) MX preference you can add as many mailservers you want until you have still numbers free: as lower the number the first its get served. So if you have 10 and 20 the first 10 is served is it down 20 is served etc.

For blacklisting you will have a problem because not only the mailserver itselfe get blacklisted also your domain

2.) its enough if you have the second mx entry for

3.) Master solution is a hardware loadbalancer infront and a cluster behind. If not possible then only cluster because then you do not need to switch anything and you can upgrade with more servers if you are under heavy load.

ASKER CERTIFIED SOLUTION

Simon Butler (Sembee)

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SOLUTION

Dave

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