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Date: Wed, 13 Dec 2006 16:19:37 -0600 (CST)
From: Philip Hallstrom <freebsd@philip.pjkh.com>
To: Albert Shih <shih@math.jussieu.fr>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Jail
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> 	Can I use postfix/courier-imap in a jail ? (without any patch of-course, with and without chroot)

Yes for postfix... I do it now.  I would assume courier-imap would work as 
well.  The only apps that won't work are ones that rely on ICMP (like 
nagios trying to ping servers).

> 	Can I use bind in a jail (with and without chroot) ?

Sure.

> If I make many jail how can I update all without lot of recompilation ?
> Using nullfs ?

ezjail  -> http://erdgeist.org/arts/software/ezjail/

It does exactly what you're wantingto do.

-philip