Date: Mon, 12 Apr 2004 13:01:41 -0500 From: Mark Johnston <mjohnston@skyweb.ca> To: freebsd-isp@freebsd.org Subject: Re: mail server recommendations? Message-ID: <200404121301.41643.mjohnston@skyweb.ca> In-Reply-To: <20040412173824.GC13343@bewilderbeast.blackhelicopters.org> References: <20040412173824.GC13343@bewilderbeast.blackhelicopters.org>
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"Michael W. Lucas" <mwlucas@blackhelicopters.org> wrote: > I'm looking for a decent solution for a mail server software package. > We need SASL, IMAP, pop3ssl, antivirus, and mime-type filtering. In > an ideal world, we'd have the ability to create mail accounts without > creating user accounts. On a fairly small (15-domain) personal box, I'm running postfix with a PostgreSQL backend. The postfix smtpd_recipient_restrictions, virtual_mailbox_maps, virtual_mailbox_domains, and virtual_alias_maps are all stored in the DB. The POP3/IMAP is provided by courier-imap, which supports SSL, pulling the logins and maildirs from the same database table that Postfix stores them in. For me, mail accounts without user accounts was a requirement, and this scheme provides that nicely. What I wound up with was a users table that looks like this: id | crypt | home | maildir | uid | gid mark@xl0.org CRyptedpw / var/vmail/xl0.org/mark 525 525 The UID and GID are the same for all users, since there's no access to those directories other than by the mail servers. The home and maildir look that way to make postfix and courier play well together. I imagine MD5 passwords could be used, but I migrated this from a legacy system that used crypt. I realize this doesn't match your requirements exactly, since it doesn't use SASL (no relaying done at all), but the support is there in postfix. I haven't set up antivirus and mime-type filtering, but I did look at them once, and it seemed straightforward - there are plenty of packages out there that support postfix. > I have to admit that I'm partial to sendmail simply for the milter > interface that lets me plug in, say, MIMEDefang, clamav, and all sorts > of other nifty stuff. I didn't consider sendmail for this project, mainly because I'd used postfix before and liked it. The postfix interface for plugging in virus scanners and the like strikes me as rather clunky, though - it's just a bunch of SMTP daemons chained together. I haven't included a whole lot of detail, since I did this mostly by tutorial - googling on postfix courier brings up the ones I used, mostly with MySQL, but it's interchangeable with Pg from a Postfix perspective. Mark
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