1system_mail_selinux(8) SELinux Policy system_mail system_mail_selinux(8)
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6 system_mail_selinux - Security Enhanced Linux Policy for the sys‐
7 tem_mail processes
8
10 Security-Enhanced Linux secures the system_mail processes via flexible
11 mandatory access control.
12 The system_mail processes execute with the system_mail_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
16 For example:
18 ps -eZ | grep system_mail_t
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24 The system_mail_t SELinux type can be entered via the sendmail_exec_t
25 file type.
26 The default entrypoint paths for the system_mail_t domain are the fol‐
28 lowing:
29 /usr/sbin/sendmail(.sendmail)?, /usr/bin/esmtp, /usr/sbin/rmail,
31 /usr/sbin/ssmtp, /usr/lib/sendmail, /usr/bin/esmtp-wrapper,
32 /var/qmail/bin/sendmail, /usr/sbin/sendmail.postfix
33
35 SELinux defines process types (domains) for each process running on the
36 system
37 You can see the context of a process using the -Z option to ps
39 Policy governs the access confined processes have to files. SELinux
41 system_mail policy is very flexible allowing users to setup their sys‐
42 tem_mail processes in as secure a method as possible.
43 The following process types are defined for system_mail:
45 system_mail_t
47 Note: semanage permissive -a system_mail_t can be used to make the
49 process type system_mail_t permissive. SELinux does not deny access to
50 permissive process types, but the AVC (SELinux denials) messages are
51 still generated.
52
55 SELinux policy is customizable based on least access required. sys‐
56 tem_mail policy is extremely flexible and has several booleans that
57 allow you to manipulate the policy and run system_mail with the tight‐
58 est access possible.
59 If you want to allow users to resolve user passwd entries directly from
63 ldap rather then using a sssd server, you must turn on the authlo‐
64 gin_nsswitch_use_ldap boolean. Disabled by default.
65 setsebool -P authlogin_nsswitch_use_ldap 1
67 If you want to allow all domains to execute in fips_mode, you must turn
71 on the fips_mode boolean. Enabled by default.
72 setsebool -P fips_mode 1
74 If you want to determine whether Gitosis can send mail, you must turn
78 on the gitosis_can_sendmail boolean. Disabled by default.
79 setsebool -P gitosis_can_sendmail 1
81 If you want to allow http daemon to send mail, you must turn on the
85 httpd_can_sendmail boolean. Disabled by default.
86 setsebool -P httpd_can_sendmail 1
88 If you want to allow confined applications to run with kerberos, you
92 must turn on the kerberos_enabled boolean. Enabled by default.
93 setsebool -P kerberos_enabled 1
95 If you want to allow system to run with NIS, you must turn on the
99 nis_enabled boolean. Disabled by default.
100 setsebool -P nis_enabled 1
102 If you want to allow confined applications to use nscd shared memory,
106 you must turn on the nscd_use_shm boolean. Disabled by default.
107 setsebool -P nscd_use_shm 1
109 If you want to allow Redis to run redis-sentinal notification scripts,
113 you must turn on the redis_enable_notify boolean. Disabled by default.
114 setsebool -P redis_enable_notify 1
116 If you want to support ecryptfs home directories, you must turn on the
120 use_ecryptfs_home_dirs boolean. Disabled by default.
121 setsebool -P use_ecryptfs_home_dirs 1
123
127 The SELinux process type system_mail_t can manage files labeled with
128 the following file types. The paths listed are the default paths for
129 these file types. Note the processes UID still need to have DAC per‐
130 missions.
131 anon_inodefs_t
133 arpwatch_tmp_t
136 cifs_t
139 courier_spool_t
142 /var/spool/courier(/.*)?
144 /var/spool/authdaemon(/.*)?
145 ecryptfs_t
147 /home/[^/]+/.Private(/.*)?
149 /home/[^/]+/.ecryptfs(/.*)?
150 etc_aliases_t
152 /etc/mail/.*.db
154 /etc/mail/aliases.*
155 /etc/postfix/aliases.*
156 /etc/aliases
157 /etc/aliases.db
158 exim_log_t
160 /var/log/exim[0-9]?(/.*)?
162 exim_spool_t
164 /var/spool/exim[0-9]?(/.*)?
166 mail_home_rw_t
168 /root/Maildir(/.*)?
170 /root/.esmtp_queue(/.*)?
171 /var/lib/arpwatch/.esmtp_queue(/.*)?
172 /home/[^/]+/.maildir(/.*)?
173 /home/[^/]+/Maildir(/.*)?
174 /home/[^/]+/.esmtp_queue(/.*)?
175 mail_home_t
177 /root/.mailrc
179 /root/.esmtprc
180 /root/.forward
181 /root/dead.letter
182 /home/[^/]+/.forward[^/]*
183 /home/[^/]+/.mailrc
184 /home/[^/]+/.esmtprc
185 /home/[^/]+/dead.letter
186 mail_spool_t
188 /var/mail(/.*)?
190 /var/spool/imap(/.*)?
191 /var/spool/mail(/.*)?
192 /var/spool/smtpd(/.*)?
193 mqueue_spool_t
195 /var/spool/(client)?mqueue(/.*)?
197 /var/spool/mqueue.in(/.*)?
198 munin_var_lib_t
200 /var/lib/munin(/.*)?
202 nfs_t
204 qmail_spool_t
207 /var/qmail/queue(/.*)?
209 sendmail_log_t
211 /var/log/mail(/.*)?
213 /var/log/sendmail.st.*
214 system_mail_tmp_t
216 uucpd_spool_t
219 /var/spool/uucp(/.*)?
221 /var/spool/uucppublic(/.*)?
222
225 semanage fcontext can also be used to manipulate default file context
226 mappings.
227 semanage permissive can also be used to manipulate whether or not a
229 process type is permissive.
230 semanage module can also be used to enable/disable/install/remove pol‐
232 icy modules.
233 semanage boolean can also be used to manipulate the booleans
235 system-config-selinux is a GUI tool available to customize SELinux pol‐
238 icy settings.
239
242 This manual page was auto-generated using sepolicy manpage .
243
246 selinux(8), system_mail(8), semanage(8), restorecon(8), chcon(1),
247 sepolicy(8), setsebool(8)
248system_mail 19-05-30 system_mail_selinux(8)