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Date:      Wed, 10 May 2000 00:41:48 +0530
From:      Rahul Siddharthan <rsidd@physics.iisc.ernet.in>
To:        Nathan Vidican <webmaster@wmptl.com>
Cc:        Daniel Brownstone <jkirk@tigger.100acre.com>, freebsd-questions@FreeBSD.ORG
Subject:   Re: sendmail relaying question
Message-ID:  <20000510004147.B22494@physics.iisc.ernet.in>
In-Reply-To: <39185FCF.5D7EA833@wmptl.com>; from webmaster@wmptl.com on Tue, May 09, 2000 at 02:58:23PM -0400
References:  <Pine.BSF.4.10.10005091118470.20415-100000@tigger.100acre.com> <39185FCF.5D7EA833@wmptl.com>

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Nathan Vidican said on May  9, 2000 at 14:58:23:
> Three possible solutions: 1 - tell your users to use their ISP-proveded
> outgoing smtp server (this is the solution most people opt for-
> ourselves included here)
> 
> 2 - setup sendmail to allow relaying for anyone, (NOT a good idea,
> because if someone else get's word they could easily abuse it!)

You can permit relaying from selected hosts or selected subnets.
If the users have permanent IP addresses, or their addresses are
all from the same subnet (and there aren't any potential spammers
among them), there's no problem doing this.  It can be done in
sendmail, but offhand I can't tell you how. In qmail you can run it
off tcpserver and have a rules file for tcpserver telling it which
hosts/networks are allowed to relay. The qmail FAQ gives details.


> 
> 3 - force user authentication upon sending, this can be done from most
> mail clients, (including but definetly not limited to Outlook), - to be
> completely honest I've never attempted this, and I'm not sure how one
> would accomplish this using sendmail, I'm assuming this kind of thing
> would probably be easier to setup using qmail.
> 
> -- 
> Nathan Vidican
> webmaster@wmptl.com
> Windsor Match Plate & Tool Ltd.
> http://www.wmptl.com/
> 
> 
> Daniel Brownstone wrote:
> > 
> > I've searched for the answer to this question, but I've been unable to
> > find it elsewhere, so I'm trying this list. :)
> > 
> > I'm running 3.3-RELEASE.  I would like people who have accounts on my box
> > to be able to use my POP server to send e-mail wherever they want.  So if
> > someone has, for example, pacbell as their ISP,  but they also have an
> > account on my machine (100acre.com), I want them to be able to access
> > their account on 100acre, and send mail from it, as well.
> > 
> > Right now, if someone tries to send mail using Outlook, etc., they get a
> > "relaying denied" error.  So if someone from AOL, for example, sends an
> > e-mail to my user, and my user checks his account by dialing into his ISP
> > (pacbell) and downloading his mail from my box with Outlook, when he tries
> > to reply (to the originator, with the AOL address), he'll get a relaying
> > denied error.
> > 
> > How can I stop that from happening?
> > 
> > Regards,
> > 
> > Dan Brownstone
> > jkirk@100acre.com
> > 
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-questions" in the body of the message
> 
> 
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