SBS Unable to resolve domain but Bind can?

[J de Boyne Pollard]

A> The domain is 'southbank.blackboard.net'.

No it isn't. The domain name was
"southbank.blackboard.net.MRH.local.", because you didn't use a fully
qualified domain name when you invoked the tool. The output of the
tool in fact told you that this was the domain name:

A> QUESTIONS:
A> southbank.blackboard.net.MRH.local, type = A, class = IN

It's unlikely that you intended such a domain name to exist, so the
fact that it doesn't isn't a problem. The tool then tried another,
simpler, variation on turning the non-fully-qualified name that you
supplied into a fully qualified domain name:

A> QUESTIONS:
A> southbank.blackboard.net, type = A, class = IN

The "server failure" answer, that you received in turn for that, is
because the people who publish the DNS data for "blackboard.net." have
supplied a client-side alias for "southbank.blackboard.net.", pointing
to "southbank.blackboard.com.", that has a time to live of zero
seconds:

> southbank.blackboard.net. 0 IN CNAME southbank.blackboard.com.
> southbank.blackboard.com. 3600 IN A 209.133.75.134

The alias data are expiring from your resolving proxy DNS server's
cache whilst it is trying to obtain the DNS data for the target of the
alias. This only happens the first time that your resolving proxy DNS
server attempts query resolution. The second time (presuming that it
is no longer than 3600 seconds later), your resolving proxy DNS server
will have the target data already cached, it will have no need to
perform additional back-end queries to obtain those data, and so the
alias won't have the opportunity to expire.

This is not your problem. It is theirs. A zero TTL on a client-side
alias is a well-known cause of such difficulties. To quote Mark
Andrews, "Zero is a good way to inflict a DoS on yourself."; and this
is precisely what the people who publish the DNS data for
"blackboard.net." have done to themselves. You might care to tell
them.

[Ace Fekay [MVP]]

In news:790132e8-896f-4ea6...@y43g2000hsy.googlegroups.com,
J de Boyne Pollard <j.deboyn...@tesco.net> typed:
<snipped>

> This is not your problem. It is theirs. A zero TTL on a client-side
> alias is a well-known cause of such difficulties. To quote Mark
> Andrews, "Zero is a good way to inflict a DoS on yourself."; and this
> is precisely what the people who publish the DNS data for
> "blackboard.net." have done to themselves. You might care to tell
> them.

Nice catch.

It's been quite some time since I've seen you in the groups, Jonathan. Nice
to see you again,. I hope you've been well.

Ace

[J de Boyne Pollard]

AF> It's been quite some time since I've seen you in the groups,
Jonathan.

In part that's because the disc holding my news spool went kaput. I
still haven't saved up the cash to have the data recovered from it.

AF> Nice to see you again,. I hope you've been well.

Thank you for those kind words.

[Ace Fekay [MVP]]

In news:36a788eb-8872-43dc...@o6g2000hsd.googlegroups.com,

J de Boyne Pollard <j.deboyn...@tesco.net> typed:

> > It's been quite some time since I've seen you in the groups,
> Jonathan.
>
> In part that's because the disc holding my news spool went kaput. I
> still haven't saved up the cash to have the data recovered from it.
>

> > Nice to see you again,. I hope you've been well.
>
> Thank you for those kind words.

You are welcome. I hope you can overcome your dilemma with the crashed disc.

[Kevin D. Goodknecht Sr. [MVP]]

Read inline please.

In news:O0F2zX8N...@TK2MSFTNGP04.phx.gbl,
Ace Fekay [MVP] <Pleas...@SomeDomain.com> typed:

All this time, and I just thought Jonathan must have fallen off the face of
the Earth. I is kinda nice to have his intellectual type of input, I really
did miss it.

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

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[Kevin D. Goodknecht Sr. [MVP]]

Read inline please.

In news:O0F2zX8N...@TK2MSFTNGP04.phx.gbl,
Ace Fekay [MVP] <Pleas...@SomeDomain.com> typed:

All this time, and I just thought Jonathan must have fallen off the face of

[Ace Fekay [MVP]]

In news:OWD3%23WCOI...@TK2MSFTNGP05.phx.gbl,
Kevin D. Goodknecht Sr. [MVP] <ad...@nospam.WFTX.US> typed:

> All this time, and I just thought Jonathan must have fallen off the
> face of the Earth. I is kinda nice to have his intellectual type of
> input, I really did miss it.

I must agree!

;-)

[Jonathan de Boyne Pollard]

All the way back on 2007-12-06, Ace Fekay wrote:

It's been quite some time since I've seen you in the groups, Jonathan.

In part that's because the disc holding my news spool went kaput. I still haven't saved up the cash to have the data recovered from it.

I hope you can overcome your dilemma with the crashed disc.

I still haven't saved up the cash.  But I now, finally, have a new disc, my own NNTP server that almost works, and roughly 800,000 articles that I was able to replicate from several other servers, in a new shiny news spool.  It took a while to write the NNTP server.  It also took a few weeks to replicate the articles.  (I still have two entire newsgroup hierarchies yet to scan, and a corrupted index for one newsgroup to fix.)

[Ace Fekay [MVP-DS, MCT]]

"Jonathan de Boyne Pollard" <J.deBoynePoll...@NTLWorld.COM> wrote
in message
news:IU.D20100128.T0...@J.de.Boyne.Pollard.localhost...

That's quite an old post you responded to. Glad to hear you finally came up
with an alternate solution that didn't require additional money to recover
the data. It almost sounds like ou can start offering Usenet services. :-)

Ace

[Jonathan de Boyne Pollard]

>
>>
>> All the way back on 2007-12-06, Ace Fekay wrote:
>>
> That's quite an old post you responded to.
>

Yes. It has taken a while. But I now, at least, have the old posts.

> It almost sounds like ou can start offering Usenet services. :-)
>

The code is not ready to face the general public, yet. As I said, it
almost works. (-:

[Jonathan de Boyne Pollard]

>
>>>
>>> All the way back on 2007-12-06, Ace Fekay wrote:
>>>
>> That's quite an old post you responded to.
>>
> Yes. It has taken a while. But I now, at least, have the old posts.
>

On the subject of old posts: It is markedly apparent, going back through
some of these newsgroups for the past half decade, that there are some
things that are answered longhand over and over and over again,
wastefully, and in some cases not very beneficially, with good answers
not being preserved.

For MPWSA and MPWSG here are a few of the more identifiable repeated
subjects:
* resizing, generally expanding, the system volume
* using external time sources
* read-only attributes that don't go away
* login dialogue boxes being greyed out
* the Administrator account becoming locked out
* using 4GiB or more of physical RAM
* seeing the "wrong" amount of free space and "mysteriously" losing space
* LSASS crashing or eating CPU
* CSRSS eating CPU
* NTVDM encountering a hard error
* not understanding ROBOCOPY
* NTBACKUP not doing what one wants
* choosing betwen 32-bit and 64-bit
* finding and cleaning up inactive users/groups

MPWSD and MPWSN have some additional subjects.