[Postfixbuch-users] OT: DNS Probleme

[Sascha Peters]

Hallo,

kann sich jemand folgenden Erklären?

Ich habe auf ein und dem selben Ubuntu 10.04 Server Abfragen über das 
DNS mit "host" und mit "dig" gemacht. Mit unterschiedlichen Ergebnissen.

     A-RR von follong.nl
     MX-RR von follong.nl
     A-RR von follong.nl

Hintergrund... ich habe von einem E-Mailserver die Meldung erhalten das 
er 5 Tage lang die E-Mail nicht zustellen konnte. Folgender Fehler von 
"qmail"... Das wollte ich auf meinem Server dann kurz testen, und bekamm 
dann die wiedersprüchlichen Informationen auf meinem Server.

--- Schnipp ---
"relay=follong.nl., dsn=4.0.0, stat=Deferred: Name server: follong.nl.: 
host name lookup failure"
--- Schnapp ---



--- Schnipp ---

#> host -t a follong.nl
follong.nl has address 159.253.0.151
#> host -t mx follong.nl
follong.nl mail is handled by 10 mail.follong.nl.
#> host -t a mail.follong.nl
mail.follong.nl has address 159.253.0.151


#> dig a follong.nl

; <<>> DiG 9.7.0-P1 <<>> a follong.nl
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24072
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;follong.nl.                    IN      A

;; ANSWER SECTION:
follong.nl.             13955   IN      A       159.253.0.151

;; AUTHORITY SECTION:
follong.nl.             6755    IN      NS      ns2.windvogelserver.com.
follong.nl.             6755    IN      NS      ns1.windvogelserver.com.

;; ADDITIONAL SECTION:
ns1.windvogelserver.com. 13957  IN      A       159.253.0.117
ns2.windvogelserver.com. 13957  IN      A       159.253.0.117

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Nov 28 08:24:57 2012
;; MSG SIZE  rcvd: 131

[server01]:~# dig a follong.nl

; <<>> DiG 9.7.0-P1 <<>> a follong.nl
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24072
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;follong.nl.                    IN      A

;; ANSWER SECTION:
follong.nl.             13955   IN      A       159.253.0.151

;; AUTHORITY SECTION:
follong.nl.             6755    IN      NS      ns2.windvogelserver.com.
follong.nl.             6755    IN      NS      ns1.windvogelserver.com.

;; ADDITIONAL SECTION:
ns1.windvogelserver.com. 13957  IN      A       159.253.0.117
ns2.windvogelserver.com. 13957  IN      A       159.253.0.117

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Nov 28 08:24:57 2012
;; MSG SIZE  rcvd: 131

[server01]:~# dig mx follong.nl

; <<>> DiG 9.7.0-P1 <<>> mx follong.nl
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 728
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;follong.nl.                    IN      MX

;; Query time: 25 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Nov 28 08:25:03 2012
;; MSG SIZE  rcvd: 28

[server01]:~# dig a mail.follong.nl

; <<>> DiG 9.7.0-P1 <<>> a mail.follong.nl
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 12921
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mail.follong.nl.               IN      A

;; Query time: 26 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Nov 28 08:25:09 2012
;; MSG SIZE  rcvd: 33


#> dig mx follong.nl

; <<>> DiG 9.7.0-P1 <<>> mx follong.nl
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 728
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;follong.nl.                    IN      MX

;; Query time: 25 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Nov 28 08:25:03 2012
;; MSG SIZE  rcvd: 28


#> dig a mail.follong.nl

; <<>> DiG 9.7.0-P1 <<>> a mail.follong.nl
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 12921
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mail.follong.nl.               IN      A

;; Query time: 26 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Nov 28 08:25:09 2012
;; MSG SIZE  rcvd: 33


--- Schnapp ---


Gruß
Sascha