RE: [cobalt-users] Cube 3 smtp problems

["pwilliams" <petew@xxxxxxxxxxx>]

Hi

Well I have undertaken some more tests

The issue appears to be the mail client Outlook is sending SMTP requests
to the cube, (I used a sniffer and confirmed this and saw the successful
transmission of an email) which appears to ignore them (giving a time
out) until a random point (from a couple of minutes to over an hour)
when it will connect, send the mail and then collect the POP mail

Is there a tool I use use (ala fetchmail) to understand the dialogue and
what is happening?

Also if I login via telnet to the SMTP server, all works fine

Yours in a reducing circle of sanity

Peter



-----Original Message-----
From: cobalt-users-admin@xxxxxxxxxxxxxxx
[mailto:cobalt-users-admin@xxxxxxxxxxxxxxx] On Behalf Of Gerald Waugh
Sent: Friday, October 10, 2003 8:38 PM
To: cobalt-users@xxxxxxxxxxxxxxx
Subject: RE: [cobalt-users] Cube 3 smtp access problems


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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