actually, i already have separate passwd/shadow files for each domain.
im just curious if each domain can have 64K users.
thanks.
--- "Ian C. Sison" <[EMAIL PROTECTED]> wrote:
>
>
> On Tue, 28 Nov 2000, Michael J. Maravillo wrote:
>
> > On Mon, Nov 27, 2000 at 09:36:17PM -0800, Ina Patricia Lopez wrote:
> > >
> > > Question 1: am i still limited with the 64K limit for virtual
> passwd
> > > and virtual shadow files of each domain?
> >
> > Note that that's 64K for all domains, not for each. Each user on
> > your system maps to one unique system userid -- which currently has
> > a max of 16-bits on most(?) Linux systems. See "man getpwent"
> > where uid_t is an unsigned int...
>
> You can also try cyrus-imap which does not have the 64K limitation,
> as
> users may be stored in a database.
>
>
> > Or, you can go the virtual route of storing all user info in some
> > directory storage like LDAP -- as what Victor mentioned
> > previously. Mailbox locations, passwords, etc. are looked up
> > from the directory. With this setup, mostly likely you'll be
> > using only one system userid for all your virtual users. No
> > 16-bit limit, therefore unlimited number of users. Some links
> > you might want to check out:
> >
> > - LDAP_README of the Postfix distribution
> > - qmail-ldap: http://www.nrg4u.com/
> > - ISPman: http://ispman.sourceforge.net/
> >
> > > Question2: now that virtual email hosting seems to be working now
> > > (using pop), are the lines below still applicable??
> > >
> > > > [EMAIL PROTECTED] user1@localhost
> > > > [EMAIL PROTECTED] user2@localhost
> > > > [EMAIL PROTECTED] user3@localhost
> >
> > These are used by sendmail, not the POP server. Without these,
> > your SMTP server won't know to which local user an incoming
> > e-mail is for -- specially in cases (your example above) where
> > you have multiple and same username parts but with different
> > domains.
>
> The limitation with a one-box, many domains solution is that you have
> only
> one passwd file for all of the domains, so you can't support
> [EMAIL PROTECTED] and [EMAIL PROTECTED], unless you alias them,
> and
> will be a pain to maintain.
>
> Alternately for a more wholelistic approach to virtual domains, check
> out
>
> http://www.prongs.org/virtfs/
>
> which will allow you to have one passwd file for each domain.
>
>
>
>
> _
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