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Re: [Old box, Newbie] Undelivered Mail Returned to Sender

From: Wietse Venema (wietseporcupine.org)
Date: Thu Dec 13 2007 - 13:57:32 CST


Paul Rogers:
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26600
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 7, ADDITIONAL: 7
> ;; QUERY SECTION:
> ;; yahoo.com, type = MX, class = IN

No replies for an MX lookup? You're using a toy DNS server.
The answer is supposed to look like this:

; <<>> DiG 9.3.3 <<>> mx yahoo.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16553
;; flags: qr rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 7, ADDITIONAL: 12

;; QUESTION SECTION:
;yahoo.com. IN MX

;; ANSWER SECTION:
yahoo.com. 7200 IN MX 1 a.mx.mail.yahoo.com.
yahoo.com. 7200 IN MX 1 b.mx.mail.yahoo.com.
yahoo.com. 7200 IN MX 1 c.mx.mail.yahoo.com.
yahoo.com. 7200 IN MX 1 d.mx.mail.yahoo.com.
yahoo.com. 7200 IN MX 1 e.mx.mail.yahoo.com.
yahoo.com. 7200 IN MX 1 f.mx.mail.yahoo.com.
yahoo.com. 7200 IN MX 1 g.mx.mail.yahoo.com.

;; AUTHORITY SECTION:
....and so on...

        Wietse