[CentOS] Antwort: Re: large numbers of linux system user for postfix

Andreas Reschke Andreas.Reschke at behrgroup.com
Mon Nov 8 08:04:33 EST 2010


centos-bounces at centos.org wrote on 08.11.2010 13:54:15:

> ahmad riza h nst <rizahnst at gmail.com> 
> Gesendet von: centos-bounces at centos.org
> 
> 08.11.2010 13:54
> 
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> Re: [CentOS] large numbers of linux system user for postfix
> 
> On Mon, Nov 8, 2010 at 6:42 PM, Ben McGinnes <ben at adversary.org> wrote:
> > On 8/11/10 7:30 PM, ahmad riza h nst wrote:
> >> hello,
> >>
> >> i need to setup a mail server with postfix + dovecot + webmin +
> >> virtualmin + virtual user with linux system user. the virtual user
> >> may reach to thousands user from several hundreds virtual domains.
> >
> > That shouldn't be a problem.  Postfix has had support for this for
> > well over a decade.
> >
> >> what i concern is large numbers of linux system user which used in
> >> these setup, is it good or bad?
> >
> > Virtual users with a Postfix/Dovecot installation does not equate to
> > real Linux/shell accounts.  If the only service being provided is
> > mail, then there's no reason to create real accounts.
> >

> Ben,

> the problem is we would use webmin + virtualmin as an interface for
> costumers to manage their domain (mainly emails) on the server and
> virtualmin don't use/support mysql + vpopmail yet, at least that what
> i understand at this moment.

> virtualmin choose to use unix system user with postfix, so if i create
> an email then it create one unix system user too, this is what i'm
> concern, since i don't have any information about what happen to
> linux/centos if these unix system user growing bigger and bigger to
> reach some thousands users for an example.

> >> maybe somebody would share their experience about this setup ?
> >>
> >> any links would be good.
> >>
> >> postfix 2.6.7
> >> dovecot 2.0.6
> >> centos 5.x
> >
> > Is there any particular reason you've chosen these versions?  That is,
> > are there specific functions which these versions provide that are not
> > in prior versions?
> >
> > I ask because I'm running these versions in CentOS 5.x:
> >
> > postfix-2.3.3-2.1.el5_2.i386
> > dovecot-1.0.7-7.el5.i386
> >
> > If the only concern is security updates, these are backported to the
> > current versions in CentOS.

> no particular reason, i just new to postfix, currently i'm qmail +
> vpopmail admin.
> i read on postfix and dovecot website about latest stable release and
> i installed from source :)
> i know that centos have postfix + dovecot + mysql as a rpm package.

> >
> >> webmin + virtualmin
> >
> > I've had no experience with either of these as I edit the config files
> > with a text editor.
> >

> these webmin + virtualmin mainly for user interface to manage their
> domain on the server (just like control panel on hosting server)

> >
> > Regards,
> > Ben
> >
> > --
> > Ben McGinnes  http://www.adversary.org/  Twitter: benmcginnes
> >    Systems Administrator, Writer, ICT Consultant
> > Encrypted email preferred - primary OpenPGP/GPG key: 0xA04AE313
> > http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x371AC5BFA04AE313
> >
> >
> >
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> >
> >

> 
> --
> http://blog.rizahnst.org
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Hi,
for those setups I dont't use webmin and usermin. I have only 1 user 
(vmail) und the administration of all domains, user I'm doing with 
postfixadmin.

Regards,
Andreas
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