Server backup problem

[Carnie]

Hello,
I use the qmail server to send and receive mail on a dedicated server, I have another mail server (backup) on another machine that can immediately take the relay and sends the receiving mail in case of malfunction of the first server.
Is it possible to implement this type of relief in light of the domain name?
If yes how can we proceed? Thanks in advance. please do post back.

[JonathanD]

Hi
We need you to put this in place and get in a DNS server mail with a lower priority. In the belwo example extract the statement of mail servers for the example.fr

zone.fr. 1800 IN MX 10 server_example.fr.
zone.fr. 1800 IN MX 20 server_mailexample.fr.

Above the server with the highest priority will server_example.fr.
But if that server has to fall, then the smtp remote will still send the mail to your second mail server.

[Carnie]

Hello
Thanks for the reply.

We need you to put this in place and get in a DNS server mail with a lower priority.

I use the tool on my plesk dedicated server is it possible to make these settings with plesk? if yes how do I proceed? One more question i would like to ask is, how can we proceed from the command line then?

[JonathanD]

Hi
We modify the zone files to the end without any change to forget the serial (number associated with the date of last file modification).
For example consider this

@ IN SOA nomserveurdns.zone.fr. dns.zone.fr. (
                        200487596; Serial YYYYMMDDnn
                        21500; Refresh 3 hours
                        3250; Retry every hour
                        3685400; Expires (45 days)
                        172100); Minimum ttl (2 days)

This reloads the zone files either using the command rndc either by reloading the dns service.

/ usr / sbin / rndc reload

Or you can even use this

/ etc / init.d / named restart