1postfix_qmgr_selinux(8)   SELinux Policy postfix_qmgr  postfix_qmgr_selinux(8)
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NAME

6       postfix_qmgr_selinux  -  Security  Enhanced  Linux Policy for the post‐
7       fix_qmgr processes
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DESCRIPTION

10       Security-Enhanced Linux secures the postfix_qmgr processes via flexible
11       mandatory access control.
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13       The  postfix_qmgr  processes  execute  with  the postfix_qmgr_t SELinux
14       type. You can check if you have these processes  running  by  executing
15       the ps command with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep postfix_qmgr_t
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21
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ENTRYPOINTS

24       The   postfix_qmgr_t   SELinux  type  can  be  entered  via  the  post‐
25       fix_qmgr_exec_t file type.
26
27       The default entrypoint paths for the postfix_qmgr_t domain are the fol‐
28       lowing:
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30       /usr/libexec/postfix/(n)?qmgr
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PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
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36       You can see the context of a process using the -Z option to ps
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38       Policy governs the access confined processes have  to  files.   SELinux
39       postfix_qmgr  policy  is  very  flexible  allowing users to setup their
40       postfix_qmgr processes in as secure a method as possible.
41
42       The following process types are defined for postfix_qmgr:
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44       postfix_qmgr_t
45
46       Note: semanage permissive -a postfix_qmgr_t can be  used  to  make  the
47       process type postfix_qmgr_t permissive. SELinux does not deny access to
48       permissive process types, but the AVC (SELinux  denials)  messages  are
49       still generated.
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BOOLEANS

53       SELinux  policy  is customizable based on least access required.  post‐
54       fix_qmgr policy is extremely flexible and  has  several  booleans  that
55       allow you to manipulate the policy and run postfix_qmgr with the tight‐
56       est access possible.
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60       If you want to allow all domains to use other domains file descriptors,
61       you must turn on the allow_domain_fd_use boolean. Enabled by default.
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63       setsebool -P allow_domain_fd_use 1
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66
67       If  you  want  to allow confined applications to run with kerberos, you
68       must turn on the allow_kerberos boolean. Enabled by default.
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70       setsebool -P allow_kerberos 1
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74       If you want to allow sysadm to debug or ptrace all processes, you  must
75       turn on the allow_ptrace boolean. Disabled by default.
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77       setsebool -P allow_ptrace 1
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81       If  you  want  to  allow  system  to run with NIS, you must turn on the
82       allow_ypbind boolean. Disabled by default.
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84       setsebool -P allow_ypbind 1
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87
88       If you want to allow all domains to have the kernel load  modules,  you
89       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
90       default.
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92       setsebool -P domain_kernel_load_modules 1
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96       If you want to allow all domains to execute in fips_mode, you must turn
97       on the fips_mode boolean. Enabled by default.
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99       setsebool -P fips_mode 1
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102
103       If you want to enable reading of urandom for all domains, you must turn
104       on the global_ssp boolean. Disabled by default.
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106       setsebool -P global_ssp 1
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109
110       If you want to allow confined applications to use nscd  shared  memory,
111       you must turn on the nscd_use_shm boolean. Enabled by default.
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113       setsebool -P nscd_use_shm 1
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116

MANAGED FILES

118       The  SELinux  process type postfix_qmgr_t can manage files labeled with
119       the following file types.  The paths listed are the default  paths  for
120       these  file  types.  Note the processes UID still need to have DAC per‐
121       missions.
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123       anon_inodefs_t
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125
126       initrc_tmp_t
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128
129       mnt_t
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131            /mnt(/[^/]*)
132            /mnt(/[^/]*)?
133            /rhev(/[^/]*)?
134            /media(/[^/]*)
135            /media(/[^/]*)?
136            /etc/rhgb(/.*)?
137            /media/.hal-.*
138            /net
139            /afs
140            /rhev
141            /misc
142
143       postfix_qmgr_tmp_t
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146       postfix_spool_maildrop_t
147
148            /var/spool/postfix/defer(/.*)?
149            /var/spool/postfix/deferred(/.*)?
150            /var/spool/postfix/maildrop(/.*)?
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152       postfix_spool_t
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154            /var/spool/postfix.*
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156       postfix_var_run_t
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158            /var/spool/postfix/pid/.*
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160       tmp_t
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162            /tmp
163            /usr/tmp
164            /var/tmp
165            /tmp-inst
166            /var/tmp-inst
167            /var/tmp/vi.recover
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169

FILE CONTEXTS

171       SELinux requires files to have an extended attribute to define the file
172       type.
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174       You can see the context of a file using the -Z option to ls
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176       Policy  governs  the  access  confined  processes  have to these files.
177       SELinux postfix_qmgr policy is very flexible allowing  users  to  setup
178       their postfix_qmgr processes in as secure a method as possible.
179
180       STANDARD FILE CONTEXT
181
182       SELinux  defines  the  file  context types for the postfix_qmgr, if you
183       wanted to store files with these types in a diffent paths, you need  to
184       execute  the  semanage  command to sepecify alternate labeling and then
185       use restorecon to put the labels on disk.
186
187       semanage fcontext -a  -t  postfix_qmgr_tmp_t  '/srv/mypostfix_qmgr_con‐
188       tent(/.*)?'
189       restorecon -R -v /srv/mypostfix_qmgr_content
190
191       Note:  SELinux  often  uses  regular expressions to specify labels that
192       match multiple files.
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194       The following file types are defined for postfix_qmgr:
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196
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198       postfix_qmgr_exec_t
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200       - Set files with the postfix_qmgr_exec_t type, if you want  to  transi‐
201       tion an executable to the postfix_qmgr_t domain.
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205       postfix_qmgr_tmp_t
206
207       -  Set  files  with  the  postfix_qmgr_tmp_t type, if you want to store
208       postfix qmgr temporary files in the /tmp directories.
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212       Note: File context can be temporarily modified with the chcon  command.
213       If  you want to permanently change the file context you need to use the
214       semanage fcontext command.  This will modify the SELinux labeling data‐
215       base.  You will need to use restorecon to apply the labels.
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COMMANDS

219       semanage  fcontext  can also be used to manipulate default file context
220       mappings.
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222       semanage permissive can also be used to manipulate  whether  or  not  a
223       process type is permissive.
224
225       semanage  module can also be used to enable/disable/install/remove pol‐
226       icy modules.
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228       semanage boolean can also be used to manipulate the booleans
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230
231       system-config-selinux is a GUI tool available to customize SELinux pol‐
232       icy settings.
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AUTHOR

236       This manual page was auto-generated using sepolicy manpage .
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SEE ALSO

240       selinux(8),  postfix_qmgr(8),  semanage(8),  restorecon(8),  chcon(1) ,
241       setsebool(8)
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245postfix_qmgr                       15-06-03            postfix_qmgr_selinux(8)
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