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Article #69

Re: ETRN causes weird data traffic (SBS/Exchange 2000 mail collection)

#69
From: Jon Grieve
Date: Mon, 09 Jul 2001 10:53
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Jann,

You're right, Demon do not (to my knowledge) support ETRN.  However, if you
tell ES2K to use it, the worst that'll happen is that it'll dial, connect
and *attempt* to issue an ETRN command which will fail.  Of course, while
this is going on, the Demon 'punt' machines will be busily delivering the
mail to you.

What might be happening is that Exchange is not handling the return status
from the post machine that indicated ETRN is not available, and simply
trying again and again, etc. which may account for the constant traffic thus
the connection never times out.  I just checked the MSKB, and there are
quite a few articles concerning ETRN; one may give a clue.  Also, check out
the documentation for ES2K SP1; this may be a bug that's fixed...

So, it appears that ES2K may have changed somewhat.  With 4.5, it was very
much a case of "Shall I work in Dial-Up Mode?" with an option 'after' that
to specify what action to take once connected (i.e. nothing).  I haven't
moved up from 4.5 yet, so couldn't say what's changed.  Once I upgrade
here - hopefully in a few months- I'll update my FAQ...

Regards,

Jon Grieve


(To reply, modify return address; change commas to dots)






"jann" <jann@dial.pipex.com> wrote in message
news:3b3d982a$0$8511$cc9e4d1f@news.dial.pipex.com...
> ... but no ETRN (i.e. Send No Signal) means no Collection at all!
>
> Hi - Has anyone in the UK using Demon SMTP mail been able to get the
SBS2000
> ICW (Internet Connect Wiz)  to configure mail collection OK? Without
> tinkering!!!
>
> I've tried 3x install of SBS with test server (see earlier thread) and
found
> the requested 30-min mail collection was never initiated by SBS (though as
> soon as a client went on to the internet to browse, mail was delivered and
> sent fine).  With SBS4.5 (and following Mr Grieve's advice at
> http://www.southdown.co.uk/users/jgrieve/faq/demonexchange.htm - thanks!)
> it worked fine.
>
> Could this be the answer?: with 4.5 No Signal was sent from ExSvr to
collect
> mail (as I've heard that Demon don't support ETRN?). I noticed with
SBS2000
> ICW that choosing 'No Signal' meant that the ominous words 'You have
chosen
> not to download mail' become part of the wizard confirmation script.
>
> So... I reran the ICW, and chose 'Send ETRN'; immediately ExSvr sprang
into
> action and downloaded mail successfully...
>
> I guess that some change has occurred to SBS/Exchange behind the scenes
> following the dropping of the 4.5 IMC from SBS2000.  Or has some one just
> decided that Not Sending A Signal automatically means User Never Wants to
> Collect Mail... (and therefore mail is only collected when a queue of
> outgoing mail is ready to depart). Any ideas?
>
> The problem with the ETRN setting however is this: it does allow a regular
> dial up and collection, but there also seems to be permanent data traffic
> between here and Demon after connection. Hence the line is not dropped...
> Any ideas what this data traffic could be?
>
> I guess if all this fails, I shall have to rely on a scheduled PING to the
> internet to act as a collection (and delivery) trigger.
>
>
> Thanks
>
>
>
>
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From: "Jon Grieve" <jgrieve@southdown,co,uk>
Newsgroups: demon.ip.support.nt
Subject: Re: ETRN causes weird data traffic  (SBS/Exchange 2000 mail collection)
Date: Mon, 9 Jul 2001 11:53:52 +0100
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