Vmailmgr Configuration Files
14 September 2000
Bruce Guenter
_________________________________________________________________
Table of Contents
* 1. General Information
+ 1.1 Search Order
+ 1.2 File Types
+ 1.3 Command Execution
* 2. Configuration Files
+ 2.1 authvmailmgr-error
+ 2.2 authvmailmgr-loginfail
+ 2.3 authvmailmgr-postsetuid
+ 2.4 authvmailmgr-presetuid
+ 2.5 autoresponse-dir
+ 2.6 autoresponse-file
+ 2.7 bulletin-dir
+ 2.8 checkvpw-error
+ 2.9 checkvpw-loginfail
+ 2.10 checkvpw-postexec
+ 2.11 checkvpw-postsetuid
+ 2.12 checkvpw-presetuid
+ 2.13 default-expiry
+ 2.14 default-maildir
+ 2.15 default-msgcount
+ 2.16 default-msgsize
+ 2.17 default-hardquota
+ 2.18 default-softquota
+ 2.19 default-username
+ 2.20 error-maildir
+ 2.21 global-bulletin-dir
+ 2.22 maildir-arg-str
+ 2.23 password-file
+ 2.24 postmaster-aliases
+ 2.25 postmaster-email
+ 2.26 qmail-root
+ 2.27 separators
+ 2.28 socket-file
+ 2.29 user-dir
+ 2.30 user-dir-bits
+ 2.31 user-dir-slices
+ 2.32 vdeliver-postdeliver
+ 2.33 vdeliver-predeliver
+ 2.34 vsetup-pre
+ 2.35 vsetup-pre
_________________________________________________________________
1. General Information
1.1 Search Order
The system will look for the configuration files listed below in one
of the following three locations, in the order they are listed:
1. The domain-local configuration directory
2. The user-local configuration directory
3. The global configuration directory
The global configuration directory is set to `/etc/vmailmgr' by
default. The user-local and domain-local configuration directories
(for now, one and the same) are a subdirectory, named `.vmailmgr' by
default, of either the user's home directory or the domain
subdirectory. If a file matching the configuration name is found in
one of the local directories, the search stops and it is not searched
for in any higher up directories.
1.2 File Types
Each of the configuration files falls into one of the following types:
String
A single line is read from this type and used as-is with no
conversion. All data after the first line is ignored.
Directory
A single line is read from this type. If it does not have a
trailing slash (`/'), one is appended. All data after the first
line is ignored.
Number
A single line is read from this type and converted to an
unsigned integer. If the conversion succeeds, the value is
used. All data after the first line is ignored.
List
Each line of the file is read, stripped of leading and trailing
whitespace, and treated as a separate value. Lines that contain
only whitespace (ie blank lines) or lines beginning with a
pound symbol (`#') are ignored.
Executable
If the execute bits on the file are set, it is treated as an
executable file and is executed with no interpretation by
vmailmgr. The the Command Execution section below for details.
All lines are stripped of any leading or trailing white space.
Configuration files marked as `(global only)' are read before any
user-level processing occurrs, and so are not functional in the
user-level configuration.
1.3 Command Execution
The following rules apply to executing a single command or a list of
commands.
The executables are searched in reverse order of the configuration
files. That is, the global setting is used first, and then the local
settings. If the named file either does not exist in a directory or is
not executable, that directory is skipped.
A command exit code of `99' indicates that the command completed
successfully but no further commands should be executed. All other
non-zero exit codes are treated as an error and will cause the
invoking program to stop with the same error code. For `vdeliver', an
error exit of 111 will be passed up to qmail as a temporary error, and
an error exit of 100 will be passed up as a permanent failure. See the
`qmail-command' man page for full details on delivery error codes. For
`checkvpw', any non-zero exit code (except as described above) will
cause authentication to fail.
The following environment variables will be set (where applicable):
`HOME'
The home directory of the real user.
`MAILDIR'
The mail directory of the real or virtual user.
`USER'
The real user's name.
`VUSER'
The virtual user's name. For base user logins, this is blank,
and all the following items prefixed with `VUSER_' are not set.
`VUSER_CTIME'
The virtual user's creation time (or "0" if unknown).
`VUSER_EXPIRY'
The virtual user's expiry time (or "-" if not applicable).
`VUSER_HARDQUOTA'
The virtual user's total size hard quota (in bytes, or "-" if
not applicable).
`VUSER_MSGCOUNT'
The virtual user's message count limit (or "-" if not
applicable).
`VUSER_MSGSIZE'
The virtual user's message size limit (or "-" if not
applicable).
`VUSER_PERSONAL'
The virtual user's personal data.
`VUSER_SOFTQUOTA'
The virtual user's total size soft quota (in bytes, or "-" if
not applicable).
2. Configuration Files
Each of the following sections identifies a single configuration file
2.1 authvmailmgr-error
Type
executable
Default
Empty
Used By
authvmailmgr
Description
This is executed by authvmailmgr if any error occurrs other
than those caught by `authvmailmgr-loginfail' below. The
environment variable AUTHVMAILMGR_ERROR will contain an error
message. This can be used to output logging messages about
errors in authvmailmgr.
2.2 authvmailmgr-loginfail
Type
executable
Default
Empty
Used By
authvmailmgr
Description
This is executed by authvmailmgr if the user's login fails. The
environment variable AUTHVMAILMGR_ERROR will contain an error
message. The environment variable VUSER will be set to the
virtual user name if it has been determined. This can be used
to output logging messages about login failures or to throttle
hackers.
2.3 authvmailmgr-postsetuid
Type
executable
Default
@samp {vpopbull}
Used By
authvmailmgr
Description
This is executed by authvmailmgr after a user is successfully
authenticated.
2.4 authvmailmgr-presetuid
Type
executable
Default
Empty
Used By
authvmailmgr
Description
This list is executed by authvmailmgr before changing user away
from root, and before authenticating a virtual user. Note: The
environment variable `MAILDIR' is not set since the virtual
user has not yet been authenticated, or even looked up at this
point. For the same reason, `VUSER' is not authenticated and is
under complete control of the invoking user.
2.5 autoresponse-dir
Type
directory
Default
`autoresponse'
Used By
vmailmgrd, autoresponder script
Description
Identifies the subdirectory of the virtual user directory in
which all autoresponse data is stored.
2.6 autoresponse-file
Type
string
Default
`message.txt'
Used By
vmailmgrd, autoresponder script
Description
Identifies the file name within the autoresponse directory that
contains the autoresponse message.
2.7 bulletin-dir
Type
directory
Default
`bulletins'
Used By
checkvpw
Description
Identifies the subdirectory of the domain directory in which
bulletins local to a domain are stored.
2.8 checkvpw-error
Type
executable
Default
Empty
Used By
checkvpw
Description
This is executed by checkvpw if any error occurrs other than
those caught by `checkvpw-loginfail' below. The environment
variable CHECKVPW_ERROR will contain an error message. This can
be used to output logging messages about errors in checkvpw.
2.9 checkvpw-loginfail
Type
executable
Default
Empty
Used By
checkvpw
Description
This is executed by checkvpw if the user's login fails. The
environment variable CHECKVPW_ERROR will contain an error
message. The environment variable VUSER will be set to the
virtual user name if it has been determined. This can be used
to output logging messages about login failures or to throttle
hackers.
2.10 checkvpw-postexec
Type
executable
Default
Empty
Used By
checkvpw
Description
This is executed by checkvpw after the subcommand successfully
completes.
2.11 checkvpw-postsetuid
Type
executable
Default
@samp {vpopbull}
Used By
checkvpw
Description
This is executed by checkvpw after a user is successfully
authenticated.
2.12 checkvpw-presetuid
Type
executable
Default
Empty
Used By
checkvpw
Description
This list is executed by checkvpw before changing user away
from root, and before authenticating a virtual user. Note: The
environment variable `MAILDIR' is not set since the virtual
user has not yet been authenticated, or even looked up at this
point. For the same reason, `VUSER' is not authenticated and is
under complete control of the invoking user.
2.13 default-expiry
Type
number
Default
`-1'
Used By
vadduser
Description
Sets the default expiry value for newly created users. Negative
values indicate no expiry.
2.14 default-maildir
Type
directory
Default
`Maildir'
Used By
checkvpw
Description
Sets the name of the directory to be used as a non-virtual
user's maildir.
2.15 default-msgcount
Type
number
Default
`-1'
Used By
vadduser
Description
Sets the default message count limit.
2.16 default-msgsize
Type
number
Default
`-1'
Used By
vadduser
Description
Sets the default message size limit, in bytes.
2.17 default-hardquota
Type
number
Default
`-1'
Used By
vadduser
Description
Sets the default hard quota, in bytes.
2.18 default-softquota
Type
number
Default
`-1'
Used By
vadduser
Description
Sets the default soft quota, in bytes.
2.19 default-username
Type
string
Default
`+'
Used By
vmailmgrd
Description
Identifies the name of the virtual user to be looked up if a
lookup of another virtual user fails.
2.20 error-maildir
Type
directory
Default
`/var/lib/vmailmgr/error-maildir'
Used By
checkvpw
Description
Specifies the path of a read-only maildir containing a message
to be sent to the user when the maildir corresponding to that
user does not exist.
2.21 global-bulletin-dir
Type
directory
Default
`/var/spool/bulletins'
Used By
checkvpw
Description
Identifies a site-wide bulletin directory.
2.22 maildir-arg-str
Type
string
Default
`maildir'
Used By
checkvpw (global only)
Description
Identifies the string to search for when attempting to identify
the maildir argument on the command line to checkvpw.
2.23 password-file
Type
string
Default
`passwd'
Used By
vmailmgrd and command-line programs
Description
Identifies the file that contains user names, passwords, and
destinations for a virtual domain. Note that this has nothing
to do with "real" users, for which the password file is
determined by the system libraries.
2.24 postmaster-aliases
Type
list
Default
`mailer-daemon' `postmaster' `root'
Used By
vsetup
Description
A list of aliases to the postmaster email address to set up
when creating a new virtual domain with the vsetup command.
This should always contain both `postmaster' and
`mailer-daemon' (required by the RFCs), and should usually
contain `root'.
2.25 postmaster-email
Type
string
Default
`postmaster@'
Used By
vsetup
Description
Identifies the email address of the entity responsible for the
administration of the (virtual) host when building the
postmaster aliases above. If this value ends with a trailing
`@', the value of `/var/qmail/control/me' is filled in for the
host name. If no `@' is present, the current virtual host name
is filled in by vdeliver. If this is set to `postmaster', a
mail loop will result and all mail to this address will bounce.
2.26 qmail-root
Type
string
Default
`/var/qmail'
Used By
checkvpw, vdeliver, vmailmgrd
Description
Specifies the location of the base directory of your qmail
install. Set this to whatever you put into `conf-home' when you
built and installed qmail.
2.27 separators
Type
string
Default
`@:'
Used By
checkvpw (global only)
Description
Identifies the set of valid separators within a user login name
between the virtual user name and virtual domain name when
logging in via checkvpw. For example, if separators contains
`@:' then `user@domain' and `user:domain' are equivalent POP
mailbox names.
2.28 socket-file
Type
string
Default
`/tmp/.vmailmgrd'
Used By
vmailmgrd, checkvpw, vdeliver, and the CGI programs
Description
Identifies the file name of the local socket used to
communicate between the vmailmgr daemon and the other programs.
Warning: Changing this in the local configuration directories
will cause vdeliver to fail.
2.29 user-dir
Type
directory
Default
`users'
Used By
vmailmgrd and command-line programs
Description
Identifies the subdirectory from the virtual domain directory
in which a virtual user's maildir will be created. Since this
maildir is recorded in the password table, it does not have to
be the same for each user within a domain. This is prefixed
with `./' before it is used in the password table.
2.30 user-dir-bits
Type
Default
`0'
Used By
vmailmgrd and command-line programs when creating new users.
Description
See section 2.31 user-dir-slices
2.31 user-dir-slices
Type
Default
`0'
Used By
vmailmgrd and command-line programs when creating new users.
Description
`user-dir-bits' and `user-dir-slices' work together. When
creating a new user directory name, a hash code is generated on
the name of the new user. This hash code is split into
`user-dir-slices' pieces, each `user-dir-bits' bits long. Each
of these pieces is translated to an ASCII string by converting
the binary code to hexadecimal. The resulting user directory
name is then composed of:
+ the base users directory, followed by a `/'
+ each of the string pieces, each followed by a `/'
+ the user's name
For example, with `user-dir-bits' set to 6 and
`user-dir-slices' set to 1, a user named `c' maps to a
directory name of `users/2f/c/'.
2.32 vdeliver-postdeliver
Type
executable
Default
Empty
Used By
vdeliver
Description
This list is executed after the delivery is successfully
completed. Since vdeliver expects `USER' and `HOME' to be set,
it does not set them itself. If the command returns with an
error code, a warning is printed, but delivery does not fail,
as failure would lead to duplicates.
2.33 vdeliver-predeliver
Type
executable
Default
Empty
Used By
vdeliver
Description
This list is executed before the delivery is attempted, but
after the virtual user information is looked up. Since vdeliver
expects `USER' and `HOME' to be set, it does not set them
itself.
2.34 vsetup-pre
Type
executable
Default
Empty
Used By
vsetup
Description
This list is executed after the vsetup command has sucessfully
done everything else.
2.35 vsetup-pre
Type
executable
Default
Empty
Used By
vsetup
Description
This list is executed before the vsetup command makes any
changes.
_________________________________________________________________
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