Reverse DNS problems

Discussion in 'Installation/Configuration' started by K_meleonu, Nov 22, 2008.

  1. K_meleonu

    K_meleonu Member

    Hi all,
    I have a problem with my reverse dns.
    I have installed Fedora Core 5 on a new computer folowing the perfect setup on howtoforge and ISPConfig Version: 2.2.27.
    When i add a domain or a sub-domain, ispconfig created the, restart's the named service and if i try dns or www it work's fine, it resolves to but if i try a dns it doesn't resolve in or

    I triyed a dig -x ip and here is the output

    [[email protected] ~]# dig -x

    ; <<>> DiG 9.4.1-P1 <<>> -x
    ;; global options: printcmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 29367
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

    ; IN PTR

    ;; Query time: 5 msec
    ;; SERVER:
    ;; WHEN: Sat Nov 22 14:20:24 2008
    ;; MSG SIZE rcvd: 44

    I see there is a SERVFAIL and from what i read on the forum i understand that is a problem.

    Can anyone help me in some way and tell me what to do to fix this problem?

    Thank you all in advance,
    Last edited: Nov 22, 2008
  2. falko

    falko Super Moderator ISPConfig Developer

    Please ask your provider that gave you the IP to create a reverse record for you.
  3. K_meleonu

    K_meleonu Member

    Hi falko,
    Thank you for your response but that isn't the solution.
    I have 2 IP's from my provider 86.127.113.x1 and 86.127.113.x2 and on 86.127.113.x1 i have an IP class routed (
    I had all the sites on an older server and all worked fine untill i have installed all on a new server (Fedora Core 5 following the perfect setup).
    The diference is that now, the reverse dns doen NOT work.
    On the old server, when i triyed dns it gaved me (an IP from the IP's class) and dns responded with but now this thing doen not work anymore.
    I think there my be a bind/named problem.

    on the old server i had (for the primary IP on wich is the IP class routed) and wich contained the end of the IP from the IP class and the domain/subdomain asociated to IP
    $TTL 86400
    @ IN SOA (
    2008090803 ; serial, todays date + todays serial #
    28800 ; Refresh
    7200 ; Retry
    604800 ; Expire
    86400) ; Minimum TTL
    17 PTR
    17 PTR
    109 PTR


    and named.conf also had:
    zone "" {
    type master;
    file "";
    zone "" {
    type master;
    file "";

    Now named.conf does NOT have this 2 entryes and those 2 files does NOT exist. I have triyed to make them manually, restarted named and no errors comed up but after adding a new subdomain in ISPConfig those 2 files created by me had dissapeared.

    Can you please help solving this out?
    Last edited: Nov 22, 2008
  4. K_meleonu

    K_meleonu Member

    Found a solution but it is not so good.
    After adding a domain/subdomain in ISPConfig i go on DNS Administration and create a new PTR with the domain/subdomain name and ip and then the resolves to and rezolves to

    The problem is that i think this should be done by ISPConfig in the moment i add the domain/subdomain. Is this a bug or it eork's wrong just at me?

    Thank you in advance for your responses
  5. falko

    falko Super Moderator ISPConfig Developer

    You must create the PTR records manually in ISPConfig - that's no bug.
  6. K_meleonu

    K_meleonu Member

    Ok, i think't that's a bug because on the plder server i haven't created any PTR records and the forward and reverse dns was working just fine.

    I'm glad i found how to solve the problem and create those PTR.

    Thank's for your responses and for the work you do.

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