Re: DNS problems affecting Postfix

In article <1142021224.405189.43540@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
adam.block@xxxxxxxxx wrote:

Hi. I am trying to make sure Postfix is set up correctly so that I can
have Bugzilla send mail to developers. (Apache/MySQL/Bugzilla all
installed and otherwise working properly on a Mac Mini with OS X 10.3.)

Nameserver is the router, which is passing requests to the cable modem,
which is passing them, presumably, to the cable provider's DNS servers.

While I can Web browse from this machine,and 'dig' works fine for 'A'
records, it does not work for any 'MX' records:

My first guess would be a router problem. It works fine for me with a
similar network setup on OS X 10.4.5:
$ dig yahoo.com mx

; <<>> DiG 9.2.2 <<>> yahoo.com mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10523
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 16

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

;; ANSWER SECTION:
yahoo.com. 3971 IN MX 1 mx2.mail.yahoo.com.
yahoo.com. 3971 IN MX 1 mx3.mail.yahoo.com.
yahoo.com. 3971 IN MX 5 mx4.mail.yahoo.com.
yahoo.com. 3971 IN MX 1 mx1.mail.yahoo.com.

;; ADDITIONAL SECTION:
mx3.mail.yahoo.com. 376 IN A 67.28.113.10
mx3.mail.yahoo.com. 376 IN A 64.156.215.8
mx3.mail.yahoo.com. 376 IN A 64.156.215.18
mx3.mail.yahoo.com. 376 IN A 4.79.181.12
mx3.mail.yahoo.com. 376 IN A 4.79.181.13
mx4.mail.yahoo.com. 372 IN A 66.218.86.156
mx4.mail.yahoo.com. 372 IN A 66.218.86.253
mx4.mail.yahoo.com. 372 IN A 66.218.86.254
mx1.mail.yahoo.com. 371 IN A 4.79.181.14
mx1.mail.yahoo.com. 371 IN A 4.79.181.15
mx1.mail.yahoo.com. 371 IN A 67.28.113.71
mx1.mail.yahoo.com. 371 IN A 67.28.113.11
mx2.mail.yahoo.com. 372 IN A 67.28.113.19
mx2.mail.yahoo.com. 372 IN A 4.79.181.134
mx2.mail.yahoo.com. 372 IN A 4.79.181.135
mx2.mail.yahoo.com. 372 IN A 67.28.113.70

;; Query time: 173 msec
;; SERVER: 192.168.2.1#53(192.168.2.1)
;; WHEN: Fri Mar 10 21:34:40 2006
;; MSG SIZE rcvd: 368

--
Barry Margolin, barmar@xxxxxxxxxxxx
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
*** PLEASE don't copy me on replies, I'll read them in the group ***
.

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