What I did for my network is to hack courier to insert the remote IP address for the customer when they check their email into a mysql table and have exim check for an ip address to allow relaying...A lot like POP before relay as done with sendmail often.
Jeff
-----Original Message-----
From: Alistair Knight [
mailto:alistair@nts-graphics.co.uk]
Sent: Friday, June 28, 2002 11:41 AM
To: exim-users@???
Subject: Re: [Exim] Using sender_address_relay
So what's the best way of controlling relaying, my users can log on from anywhere, so host_accept_relay is out....
Regards
Alistair
----- Original Message -----
From: "Philip Hazel" <ph10@???>
To: "Alistair Knight" <alistair@???>
Cc: <exim-users@???>
Sent: Friday, June 28, 2002 4:28 PM
Subject: Re: [Exim] Using sender_address_relay
> On Fri, 28 Jun 2002, Alistair Knight wrote:
>
> [reformatted to shorter lines]
>
> > I am currently using 'sender_address_relay' to control relaying,
>
> Not a good idea. Sender addresses are trivially forged. I wonder if
> spammers read this list and pick up admissions like that?
>
> > by creating a file called 'domains' containing a list of local
> > domains and setting local_domains = /etc/domains
>
> > Is there a way of using the same domains list file for
sender_address_relay instead of:
> >
> > sender_address_relay = *@domain1.com : *@domain2.com : etc : etc
>
> sender_address_relay = /etc/domains
>
> (Section 7.16 in the Exim 3 manual, 2nd bullet)
>
>
> --
> Philip Hazel University of Cambridge Computing Service,
> ph10@??? Cambridge, England. Phone: +44 1223 334714.
>
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