configure DNS - need help

hi, hope you do well

I have these :
1- Debian 8.8
2- ISPconfig3.1
3- IP address for my vps : 198.1*3.1*2.1**
4- A domain name like : E****e.ir
5- I registered my IP address to my domain name in cloudflare with two ns
6- I created a site in ISPconfig and get it that domain name E****e.ir
7- Now when i enter my domain name it's entering to Welcome page and works fine for that site.
8- I didn't have any change in DNS part of ISPConfig and it's empty

Now I want to add a new site, I don't know what should I do in DNS part of ISPconfig,
What should I do in DNS part?
How can I get a domain name to my new sites?

I don't have any idea about configure DNS and creating a dns server for myself and have my nameserver of my own,
and what should i do with my new sites.

I will be thankful if you help me.
---------------------------
root@server1:~# cat htf_report.txt

##### SERVER #####
IP-address (as per hostname): ***.***.***.***
IP-address(es) (as per ifconfig): ***.***.***.***
[INFO] ISPConfig is installed.

##### ISPCONFIG #####
ISPConfig version is 3.1.13


##### VERSION CHECK #####

[INFO] php (cli) version is 5.6.39-0+deb8u1
[INFO] php-cgi (used for cgi php in default vhost!) is version 5.6.39-0+deb8u1

##### PORT CHECK #####


##### MAIL SERVER CHECK #####


##### RUNNING SERVER PROCESSES #####

[INFO] I found the following web server(s):
Apache 2 (PID 1640)
[INFO] I found the following mail server(s):
Postfix (PID 1123)
[INFO] I found the following pop3 server(s):
Dovecot (PID 450)
[INFO] I found the following imap server(s):
Unknown process (init) (PID 1)
[INFO] I found the following ftp server(s):
PureFTP (PID 1028)

##### LISTENING PORTS #####
(only ()
Local (Address)
[anywhere]:995 (450/dovecot)
[localhost]:10023 (710/postgrey.pid)
[localhost]:10024 (1228/amavisd-new)
[localhost]:10025 (1123/master)
[localhost]:10026 (1228/amavisd-new)
[localhost]:10027 (1123/master)
[anywhere]:587 (1123/master)
[localhost]:11211 (432/memcached)
[anywhere]:110 (450/dovecot)
[anywhere]:143 (1/init)
[anywhere]:111 (396/rpcbind)
[anywhere]:465 (1123/master)
[anywhere]:21 (1028/pure-ftpd)
***.***.***.***:53 (424/named)
[localhost]:53 (424/named)
[anywhere]:22 (534/sshd)
[anywhere]:35478 (405/rpc.statd)
[anywhere]:25 (1123/master)
[localhost]:953 (424/named)
[localhost]:6010 (546/0)
[anywhere]:993 (1/init)
*:*:*:*::*:995 (450/dovecot)
*:*:*:*::*:41412 (405/rpc.statd)
*:*:*:*::*:10023 (710/postgrey.pid)
*:*:*:*::*:10024 (1228/amavisd-new)
*:*:*:*::*:10026 (1228/amavisd-new)
*:*:*:*::*:3306 (716/mysqld)
*:*:*:*::*:587 (1123/master)
[localhost]10 (450/dovecot)
[localhost]43 (1/init)
[localhost]11 (396/rpcbind)
*:*:*:*::*:8080 (1640/apache2)
*:*:*:*::*:80 (1640/apache2)
*:*:*:*::*:8081 (1640/apache2)
*:*:*:*::*:465 (1123/master)
*:*:*:*::*:21 (1028/pure-ftpd)
*:*:*:*::*:53 (424/named)
*:*:*:*::*:22 (534/sshd)
*:*:*:*::*:25 (1123/master)
*:*:*:*::*:953 (424/named)
*:*:*:*::*:6010 (546/0)
*:*:*:*::*:443 (1640/apache2)
*:*:*:*::*:993 (1/init)




##### IPTABLES #####
Chain INPUT (policy ACCEPT)
target prot opt source destination
fail2ban-postfix-sasl tcp -- [anywhere]/0 [anywhere]/0 multiport dports 25
fail2ban-dovecot-pop3imap tcp -- [anywhere]/0 [anywhere]/0 multiport dports 110,995,143,993
fail2ban-pureftpd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 21
fail2ban-ssh tcp -- [anywhere]/0 [anywhere]/0 multiport dports 22

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain fail2ban-dovecot-pop3imap (1 references)
target prot opt source destination
RETURN all -- [anywhere]/0 [anywhere]/0

Chain fail2ban-postfix-sasl (1 references)
target prot opt source destination
RETURN all -- [anywhere]/0 [anywhere]/0

Chain fail2ban-pureftpd (1 references)
target prot opt source destination
RETURN all -- [anywhere]/0 [anywhere]/0

Chain fail2ban-ssh (1 references)
target prot opt source destination
RETURN all -- [anywhere]/0 [anywhere]/0
----------------------------------------

 

and i forgot mentioned, should i get name servers somewhere else like cloudflareor namecheam or somewhere else?
i want to have my nameservers like these:
ns1.E****e.ir
ns2.E****e.ir
how can i have them?

 

There is tutorial:
https://www.howtoforge.com/tutorial/setting-up-your-own-name-service-with-ispconfig/

 

in tutorial we have:

The IP addresses used in this tuturial is class C and local addresses, should I use local addresses like them in my name service settings?

 

Use the IP-number your server host has.

 

my server have just one IP : 198.1*3.1*2.1**
in the tutorial there is 4 IP used, how is that?

 

There are three IP-numbers since there are three hosts: one web server and two name servers.

 

i have just one server so one IP address, can i use it for all of them?

 

Read the tutorial. Then read it again.
If you still have questions that are not answered in the tutorial, feel free to ask.