The 64K limit is due to the array handling the file...so if you have 3 files,
then that would mean 3 64K limit. Now that remains to be seen...
I'm just explaining based on my knowledge on the passwd file.
On 28 Nov 00 at 23:22, Ina Patricia Lopez wrote:
>
> 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.
> >
> >
> >
> >
> > _
> > Philippine Linux Users Group. Web site and archives at
> > http://plug.linux.org.ph
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> [EMAIL PROTECTED]
>
>
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