Re: [Exim] SMTP AUTH

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Author: Philip Hazel
Date:  
To: David Saez Padros
CC: exim-users
Subject: Re: [Exim] SMTP AUTH
On Fri, 3 Aug 2001, David Saez Padros wrote:

> But, how could I prevent:
>
> - That users forge the From: address


Make your authenticators set $authenticated_id to the id that
authenticated. Then write a filter that checks From: against that id.

> - That not authenticated clients use a local address as envelope or From:


Put something like this in your system filter

if $sender_host_authenticated is "" and
${domain:$sender_address} is not local.domain
then
fail "You are not authenticated and your From: is not local"
fi

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.