Date: Wed, 19 Jul 2006 08:59:08 -0700 From: Darren Pilgrim <darren.pilgrim@bitfreak.org> To: User Ernie <ernie@puremail.eis.net.au> Cc: freebsd-isp@freebsd.org Subject: Re: Whitelist-only email server Message-ID: <44BE56CC.8020009@bitfreak.org> In-Reply-To: <200607190657.k6J6vGhF075077@puremail.eis.net.au> References: <200607190657.k6J6vGhF075077@puremail.eis.net.au>
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User Ernie wrote: > Has anybody set up a whitelist-only email server on FreeBSD that rejects all > emails except ones that are in the users personal whitelist? I did one such system using Postfix, Courier-IMAP and Squirrelmail with a MySQL backend. I modified the address book forms to include a white-listing checkbox. Users added addresses to their address books, then checked the "Allow this person to send me email" checkbox, with the effect of setting a "whitelist" column in the address table to either 0 or 1. I configured Postfix with seperate inbound and submission ports and added check_sender_access on the inbound port and check_recipient_access on the submission port. Both were mysql maps to Squirrelmail's address table: SELECT email FROM `address` WHERE email='%s' AND whitelist=1 The check_recipient_access and a submission port were included because I felt it reasonable to require users to permit a response in order to send a message to someone. This was later combined with a Squirrelmail plugin that added automatic address collection and the whitelist column defaulted to 1. -- Darren Pilgrim
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