RE: [cobalt-users] Cube 3 smtp access problems

[Gerald Waugh <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>]

On Fri, 10 Oct 2003, peter williams wrote:
>
> Thanks but there is plenty of bandwith available.
>
> I suspect it might be a DNS issue, in that the clinet cant find the
> server, yet at other times the mail flows just fine....frustrating!

check the reverse,
dig -x ip.add.re.ss

There must be an ANSWER, it may not be correct, but the key is there
is an ANSWER.

;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44795
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2

versus
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36393
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

Note: "ANSWER: 2" on the first example and "ANSWER: 0" on the second
example.

Also when you run "dig -x" note the huge delay when digging an ip
with "ANSWER: 0"

Gerald
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