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How to create redundancy mail service on cpanel server
Hello, everyone.
I want to create redundancy mail service on cpanel server.
example.com. 86400 IN NS ns1.aslia.net.
example.com. 86400 IN NS ns2.aslia.net.
example.com. 14400 IN A IP address of IPv4
localhost 14400 IN A 127.0.0.1
example.com. 14400 IN MX 0 mainserver.com.
example.com. 14400 IN MX 10 subserver.com.
Is this OK?
Comments
Yes as long as both mail servers are configured with the same accounts (I think this is required for cpanel)
Also I would use IN MX 10 for primary server and in MX 20 for secondary, that way if primary ever fails you can just change the MX to something 10 or under. Gives you a bit of breathing room.
example.com. 14400 IN MX 10 subserver.com.
Do you want HA ? The above only creates a backup MX, or store and forward, should the main server go down.
Thank you very much, luma and miTgiB.