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Article #147

Re: Mail downloading and sorting

#147
From: Dave
Date: Mon, 16 Jul 2001 04:07
75 lines
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"Michael Junek" <micjunek@ihug.com.au> wrote in message
news:9irt8e$pt0$1@lust.ihug.co.nz...
> Hello all,
>
> i connect to the internet via ISDN....

> i need to access this server via POP and get all of the emails onto my
> server.

There's probably quite a few options for this - starting with fetchmail.
The problem that you'll usually run into with this sort of thing is that POP
isn't really designed with multiple mailboxes combined into one in mind.
You'll see some problems with it handling stuff like mailing lists as they
often only reach their intended recipient due to headers provided by the
MTA.  It's at least three years since I last did this but at the time I
found a percentage of all mail would need manual intervention to end up
going to it's intended recipient.

You say later that your ISDN is up 24/7 - if this is the case you may find
yourself better off just having all mail delivered directly to your machine
and going from there.  If mail is delivered using by an MTA it will be far
more reliable.  At that level you really only need to look at whatever MTA
you want to use (sendmail, postfix, qmail etc).

> from there the user has to have web access to his or her email, but not
> POP......(anyone recommend a good, FREE web email system??)

I've been using Aeromail here (needs PHP and IMAP) but there's endless
choices out there - have a look at http://freshmeat.net/ for plenty more
options in varying stages of development.

> any email that cant get sorted to an email account (i.e. no user exists on
> the linux box), needs to be put into a central account
> (postmaster@my.domain.com or something similar)

This will depend on the software you end up using but shouldn't be a
problem.

> if anyone has any clues on how to set up sendmail, fetchmail or any other
> program that they know how to do it with, that would be FANTASTIC!........

If you can have the ISP set up an MX to your machine and then act as
secondary this is probably going to result in a more reliable result.

> we have 2 64k ISDN lines.....what i need it to do is sit there with one
line
> connected 24 hours. it needs to monitor the traffic running through this
> line, and when it reaches a certain threshold, to bring up the other line
> and then use channel bonding to double the speed of the link. When the

What do you have managing your ISDN?  Is it a card in a PC or is it on a
router of some sort?  If it's not a card in a PC then you're probably best
off using the router to handle these sorts of things - most decent ISDN
routers will provide this functionality although actual effectiveness will
be partially dependent on what service level your ISP provides for this sort
of thing.

If you're doing it with a card in a PC then check the software appropriate
to that card - I'd hope that sort of functionality would be included.  We
use ISDN routers normally so I can't help much on that score.

> with this.   This (linux) server will also be running squid as a web cache
> (i have to have about 100 clients handing off these 2 isdns, its a school
on
> a low budget).........

If you're doing squid you may also want to look at transparent proxying to
force traffic through the proxy - this will improve the effectiveness of
your cache without having to rely on correct configuration of client
machines.  It may introduce fine-tuning problems with some web sites -
there's some out there that don't cache well.

Hope that's of some help.

CYA, Dave
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From: "Dave" <dfreeman@gla.com.au>
Newsgroups: comp.os.linux.networking,linux.redhat.misc,aus.computers.linux,alt.os.linux.redhat
References: <9irt8e$pt0$1@lust.ihug.co.nz>
Subject: Re: Mail downloading and sorting
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