From: Phil Howard (no email)
Date: Mon Jul 01 2002 - 05:40:58 EDT
I am trying to virtualize the users on a new mail server.
What I mean by that is that the user names will not be listed
in the /etc/passwd file. There is another file which looks
like the first 2 fields of /etc/passwd or /etc/shadow which
contains the list of valid users. The main question is how
might I get Postfix to check this file for known users?
I do have the option to make this be virtual or not virtual
since this mail server is serving only one space of usernames
(that is, xyzzy at foo and xyzzy at bar are the same mailbox and
same user). But I have been looking through the various ways
to configure either approach and I simply don't find a way to
do this. Mail is being delivered OK, and picked up OK using
vm-pop3d as the pop3 server (which reads the alternate file
to get user passwords). So once I can get Postfix to know
the users are existing (if they are in that file), then it
should all be working.
I definitely do not want to add these users to /etc/passwd or
/etc/shadow. There are conflicts between the user space for
mail and the user space for shell logins (which have no local
mail), so this isn't an option.
I also want to avoid (means if there is no other way, then this
can be done, but I definitely want to exhaust all other possible
approaches first) having a separate file to maintain just for
Postfix to do user lookups. Basically this means if there is
a way to use the shadow file format, that's preferred, but any
map format Postfix can handle will do as a last resort.
No single configuration description pops out at me and says this
will do what I want. And I can't see any combinations that
might create the same effect. Anyone have any ideas on this?
Note that there is no virtual translation. User "xyzzy" has a
mailbox named "xyzzy" in (via symlink) /var/spool/mail in the
traditional mailbox format.
-- ----------------------------------------------------------------- | Phil Howard - KA9WGN | Dallas | http://linuxhomepage.com/ | | | Texas, USA | http://phil.ipal.org/ | ----------------------------------------------------------------- - To unsubscribe, send mail to with content (not subject): unsubscribe postfix-users
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