Russell Coker <[email protected]> writes:

> On Sun, 30 Dec 2012, [email protected] wrote:
>> I've just moved to Postfix from SendMail on a new hosting server I have 
>> built, just wanting to hear of any issues anyone has had, if any, with 
>> putting postfix in a chroot jail.
>
> In a default configuration Postfix uses a chroot for some of it's own
> processes.  See field 4 in /etc/postfix/master.cf.
>
> Generally Postfix uses minimum privileges for it's processes and it
> has a really good security history (unlike Sendmail) so you probably
> don't need to do anything more.

+1.

Security-wise, postfix is one of my least concerns.

I run each service inside its own container (LXC).  I give each
container its own rootfs, but it's not exactly minimal -- they each run
syslogd and sshd and have apt and suchlike.  I presume that's not what
you're talking about.  Also, to avoid going completely insane, I am
obliged to host postfix and dovecot in the same container.  If I ran
mailman, it would also have to go in the same container.

I've also deployed zimbra (which contains postfix) in anger, but I'm
pretty sure it was under KVM, not LXC.

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