 |  |
I can install MacsBug and make it crash...I would think that my setup is not
Re: OS 8/9 version of 3.5 server?
From: andrew
Date: Tuesday, July 31, 2001
Time: 3:14:32 pm
that unusual though and this would have come up before.
I'll send you a debug file later in the week.
Thanks again.
----- Original Message -----
From: "Men & Mice Support" <cbuxton@menandmice.com>
To: "QuickDNS Talk" <quickdns-talk@lists.menandmice.com>
Sent: Tuesday, July 31, 2001 6:00 PM
Subject: Re: OS 8/9 version of 3.5 server?
> Andrew,
>
> I don't have a direct answer for you. We'll need to do some investigation.
>
> It sounds like the server is being overloaded - have you recorded how
> many queries per second your server is receiving? It could be that
> the TCP/IP stack is failing, or that QuickDNS Server is failing. Do
> you have MacsBug installed?
>
> At any rate, please contact our support address and we'll work with
> you to try to track down the problem.
> ____________________________________________________________________
> Chris Buxton Men & Mice
> cbuxton@menandmice.com We Make DNS Easy!
>
> At 8:24 AM -0400 7/31/01, andrew wrote:
> >Hey Chris: Thanks as always with your prompt replies. I have an
> >ongoing problem,
> >however.
> >
> >I generate mailing lists on an NT server using the built-in SMTP Service. The
> >lists are in the 10-50K email range. When I initiate a list, the
> >outgoing emails
> >are spooled in a "queue" folder and sent out based on the maximum number of
> >connections allowed in the SMTP service (the default is 100).
> >Spooling seems to
> >take up most of the server's resources so the emails don't go out en
> >masse until
> >after that completes.
> >
> >The primary DNS defined in the NT server's TCP/IP settings was a Mac WGS
> >7250/120 running OS8.6 and QDNS 3.0.1. QDNS is allocated 8 meg of
> >RAM. The first
> >few times I tried to generate a list the DNS server immediately "unexpectedly
> >quit" as the NT server started querying the DNS. After much fiddling I
reduced
> >the NT Server to 16 SMTP connections and the server continued to crash.
> >
> >At the same time, I noticed that when I ran website log analysis reports
using
> >WebTrends NT, with WebTrends set to resolve all IPs, the same thing would
> >happen, until I "throttled back" WebTrends to resolve only 50 IPs at a time.
> >
> >I came to the conclusion that the TCP/IP stack on the DNS was crashing and
> >forcing QDNS to quit. I also thought the server might be too slow and lastly
> >that it might be a QDNS issue. Since then, I switched the DNS to a 7300/200,
> >running OS 9.1 (clean install), and lastly upgraded QDNS to 3.5. This
> >configuration ran stably for a week.
> >
> >I then rebooted the DNS and ran a test distribution with 500
> >emails...after the
> >NT Server (still set to 16 outgoing connections) spooled all the
> >emails I noted
> >a big increase in activity on the DNS, but the test passed without incident.
I
> >ran a second test with about 1500 emails, and the server seemed OK.
> >
> >I then went ahead and let the rest of the list go, about 34000 emails. It
took
> >about an hour to spool, and after completion QDNS unexpectedly quit shortly
> >thereafter.
> >
> >So I've tried new hardware and software, but something's still killing off
> >QDNS...where should I go from here to debug?
> >
> >TIA, Andrew Kagan
>
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