How to get a reverse DNS? [closed]

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Closed 2 years ago.

all my mails to GMX and WEB come back with the response of spam potential. I'm searching in google and I found, that I need a reverse DNS.

My DNS configuration:

$TTL 86400
@   IN SOA ns1.first-ns.de. postmaster.robot.first-ns.de. (
    2016110200   ; serial
    14400        ; refresh
    1800         ; retry
    604800       ; expire
    86400 )      ; minimum

@                        IN NS      robotns3.second-ns.com.
@                        IN NS      robotns2.second-ns.de.
@                        IN NS      ns1.first-ns.de.

@                        IN A       999.999.999.999
localhost                IN A       127.0.0.1
mail                     IN A       999.999.999.999
www                      IN A       999.999.999.999
ftp                      IN CNAME   www
imap                     IN CNAME   www
loopback                 IN CNAME   localhost
pop                      IN CNAME   www
relay                    IN CNAME   www
smtp                     IN CNAME   www
@                        IN MX 10   mail

What I have to change for a reverse DNS?

回答1:

You need to create a ptr record which enables dns to lookup your hostname rather than ip address.

example:

100.0.168.192.in-addr.arpa. 6230 IN PTR mailserver.example.com.

来源：https://stackoverflow.com/questions/44899758/how-to-get-a-reverse-dns