Hostname for Mailserver

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1

Hi,

i will install a NS 7 Final as Mailserver. I have a static IP and some registered Domains.
Can i give the NS 7 the FQDN like the subdomain?

For example Domain is heavy-water.com
Subdomain is mail.heavy-water.com
MX of Domain points to Subdomain
Subdomain points to the static IP

What is the right FQDN for the NS 7?

Thanks

Uwe

Uwe

2

Hi @transocean ,
it’s correct. :+1:

I proceed as follows

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3

The right FQDN for the server would be servername.heavy-water.com
You can choose any name for servername as long you don’t intend to use that name as a subdomain.

You have to distinguish between domain as Samba4 domain and domain you registered at your registrar. They are 2 completely different entities. The only thing when they come together is when you use the registered domain name as (part of) the Samba4 domain.

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4

Hi Vincenco ant thanks for reply.

Is it a problem to give the NS a other FQDN that is not registered in public DNS when i set
the HELO with the command config setprop postfix HeloHost to mail.heavy-water.com?

5

It’s not a problem.
The important thing is to add the public domain in the “Email” -> “Domains” in nethserver and set, as you did, the HELO.

I use the public domain for convenience in the creation of users / email addresses.

In the end, I check the server configuration through
https://mxtoolbox.com/diagnostic.aspx

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