email crisis routing - email backup server

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potato
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Posts: 192
Joined: Tue Mar 16, 2004 8:30 am
Location: my lovely trailer, next to the big tree

email crisis routing - email backup server

Post by potato »

Hey,

for a server with alot of clients on where there email traffic is of big importance, i'm searching for a way to secure this emailtraffic.
Somewhere on the net i read on a hosting company's site that they have a crisis-mailserver that takes over all the mailtraffic when the main server goes down.
I cant find annything on google, i dunno what exactly to search.

Does somebody knows what im looking for?

PS: our server is with centos, directadmin & apache2

grtz,
tom
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VladSun
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Posts: 4313
Joined: Wed Jun 27, 2007 9:44 am
Location: Sofia, Bulgaria

Post by VladSun »

0. You need to make the mail service more secure or more reliable? ;)
1. You need to build a secondary mail server and announce it in you domain zone:

Code: Select all

dig mail.bg MX

;; QUESTION SECTION:
;mail.bg.                       IN      MX

;; ANSWER SECTION:
mail.bg.                63129   IN      MX      50 mx-balancer.mail.bg.
mail.bg.                63129   IN      MX      100 mx1.mail.bg.
You see that there are two mail servers in mail.bg domain - the one with 50 is the primary and the one with 100 is the socndary (100 > 50).
There are 10 types of people in this world, those who understand binary and those who don't
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