mail_selinux(8) mail SELinux Policy documentation mail_selinux(8)NAMEmail_selinux - Security Enhanced Linux Policy for the mail processes
DESCRIPTION
Security-Enhanced Linux secures the mail processes via flexible manda‐
tory access control.
BOOLEANS
SELinux policy is customizable based on least access required. mail
policy is extremely flexible and has several booleans that allow you to
manipulate the policy and run mail with the tightest access possible.
If you want to allow postfix_local domain full write access to
mail_spool directorie, you must turn on the allow_post‐
fix_local_write_mail_spool boolean.
setsebool -P allow_postfix_local_write_mail_spool 1
If you want to allow http daemon to send mai, you must turn on the
httpd_can_sendmail boolean.
setsebool -P httpd_can_sendmail 1
If you want to allow syslogd daemon to send mai, you must turn on the
logging_syslogd_can_sendmail boolean.
setsebool -P logging_syslogd_can_sendmail 1
If you want to allow gitisis daemon to send mai, you must turn on the
gitosis_can_sendmail boolean.
setsebool -P gitosis_can_sendmail 1
NSSWITCH DOMAIN
If you want to allow users to login using a sssd serve for the mail‐
man_mail_t, mailman_cgi_t, mailman_queue_t, you must turn on the
authlogin_nsswitch_use_ldap boolean.
setsebool -P authlogin_nsswitch_use_ldap 1
If you want to allow confined applications to run with kerberos for the
mailman_mail_t, mailman_cgi_t, mailman_queue_t, you must turn on the
allow_kerberos boolean.
setsebool -P allow_kerberos 1
If you want to allow system to run with NI for the mailman_mail_t,
mailman_cgi_t, mailman_queue_t, you must turn on the allow_ypbind bool‐
ean.
setsebool -P allow_ypbind 1
FILE CONTEXTS
SELinux requires files to have an extended attribute to define the file
type.
You can see the context of a file using the -Z option to ls
Policy governs the access confined processes have to these files.
SELinux mail policy is very flexible allowing users to setup their mail
processes in as secure a method as possible.
The following file types are defined for mail:
mail_home_rw_t
- Set files with the mail_home_rw_t type, if you want to treat the
files as mail home read/write content.
mail_home_t
- Set files with the mail_home_t type, if you want to store mail files
in the users home directory.
Paths:
/root/.forward, /root/.mailrc, /root/dead.letter
mail_munin_plugin_exec_t
- Set files with the mail_munin_plugin_exec_t type, if you want to
transition an executable to the mail_munin_plugin_t domain.
Paths:
/usr/share/munin/plugins/postfix_mail.*, /usr/share/munin/plug‐
ins/mailscanner, /usr/share/munin/plugins/courier_mta_.*,
/usr/share/munin/plugins/mailman, /usr/share/munin/plug‐
ins/exim_mail.*, /usr/share/munin/plugins/qmail.*,
/usr/share/munin/plugins/sendmail_.*
mail_munin_plugin_tmp_t
- Set files with the mail_munin_plugin_tmp_t type, if you want to store
mail munin plugin temporary files in the /tmp directories.
mail_spool_t
- Set files with the mail_spool_t type, if you want to store the mail
files under the /var/spool directory.
Paths:
/var/mail(/.*)?, /var/spool/imap(/.*)?, /var/spool/mail(/.*)?
mailman_archive_t
- Set files with the mailman_archive_t type, if you want to treat the
files as mailman archive data.
mailman_cgi_exec_t
- Set files with the mailman_cgi_exec_t type, if you want to transition
an executable to the mailman_cgi_t domain.
mailman_cgi_tmp_t
- Set files with the mailman_cgi_tmp_t type, if you want to store mail‐
man cgi temporary files in the /tmp directories.
mailman_data_t
- Set files with the mailman_data_t type, if you want to treat the
files as mailman content.
Paths:
/etc/mailman.*, /var/spool/mailman.*, /var/lib/mailman.*
mailman_lock_t
- Set files with the mailman_lock_t type, if you want to treat the
files as mailman lock data, stored under the /var/lock directory
mailman_log_t
- Set files with the mailman_log_t type, if you want to treat the data
as mailman log data, usually stored under the /var/log directory.
mailman_mail_exec_t
- Set files with the mailman_mail_exec_t type, if you want to transi‐
tion an executable to the mailman_mail_t domain.
Paths:
/usr/lib/mailman.*/mail/mailman, /usr/lib/mailman.*/bin/mm-han‐
dler.*, /usr/share/doc/mailman.*/mm-handler.*, /usr/lib/mail‐
man.*/bin/mailmanctl, /usr/lib/mailman.*/scripts/mailman
mailman_mail_tmp_t
- Set files with the mailman_mail_tmp_t type, if you want to store
mailman mail temporary files in the /tmp directories.
mailman_queue_exec_t
- Set files with the mailman_queue_exec_t type, if you want to transi‐
tion an executable to the mailman_queue_t domain.
Paths:
/usr/lib/mailman.*/cron/.*, /usr/lib/mailman.*/bin/qrunner
mailman_queue_tmp_t
- Set files with the mailman_queue_tmp_t type, if you want to store
mailman queue temporary files in the /tmp directories.
mailman_var_run_t
- Set files with the mailman_var_run_t type, if you want to store the
mailman files under the /run directory.
Note: File context can be temporarily modified with the chcon command.
If you want to permanantly change the file context you need to use the
semanage fcontext command. This will modify the SELinux labeling data‐
base. You will need to use restorecon to apply the labels.
PORT TYPES
SELinux defines port types to represent TCP and UDP ports.
You can see the types associated with a port by using the following
command:
semanage port -l
Policy governs the access confined processes have to these ports.
SELinux mail policy is very flexible allowing users to setup their mail
processes in as secure a method as possible.
The following port types are defined for mail:
mail_port_t
Default Defined Ports:
tcp 2000,3905
PROCESS TYPES
SELinux defines process types (domains) for each process running on the
system
You can see the context of a process using the -Z option to ps
Policy governs the access confined processes have to files. SELinux
mail policy is very flexible allowing users to setup their mail pro‐
cesses in as secure a method as possible.
The following process types are defined for mail:
mailman_cgi_t, mailman_mail_t, mail_munin_plugin_t, mailman_queue_t
Note: semanage permissive -a PROCESS_TYPE can be used to make a process
type permissive. Permissive process types are not denied access by
SELinux. AVC messages will still be generated.
COMMANDS
semanage fcontext can also be used to manipulate default file context
mappings.
semanage permissive can also be used to manipulate whether or not a
process type is permissive.
semanage module can also be used to enable/disable/install/remove pol‐
icy modules.
semanage port can also be used to manipulate the port definitions
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux pol‐
icy settings.
AUTHOR
This manual page was autogenerated by genman.py.
SEE ALSOselinux(8), mail(8), semanage(8), restorecon(8), chcon(1) , setse‐
bool(8)dwalsh@redhat.com mail mail_selinux(8)
