1postfix_pickup_selinux(8)SELinux Policy postfix_pickuppostfix_pickup_selinux(8)
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6 postfix_pickup_selinux - Security Enhanced Linux Policy for the post‐
7 fix_pickup processes
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10 Security-Enhanced Linux secures the postfix_pickup processes via flexi‐
11 ble mandatory access control.
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13 The postfix_pickup processes execute with the postfix_pickup_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_pickup_t
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24 The postfix_pickup_t SELinux type can be entered via the post‐
25 fix_pickup_exec_t file type.
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27 The default entrypoint paths for the postfix_pickup_t domain are the
28 following:
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30 /usr/libexec/postfix/pickup
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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_pickup policy is very flexible allowing users to setup their
40 postfix_pickup processes in as secure a method as possible.
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42 The following process types are defined for postfix_pickup:
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44 postfix_pickup_t
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46 Note: semanage permissive -a postfix_pickup_t can be used to make the
47 process type postfix_pickup_t permissive. SELinux does not deny access
48 to permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
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53 SELinux policy is customizable based on least access required. post‐
54 fix_pickup policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run postfix_pickup with the
56 tightest access possible.
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60 If you want to allow users to resolve user passwd entries directly from
61 ldap rather then using a sssd server, you must turn on the authlo‐
62 gin_nsswitch_use_ldap boolean. Disabled by default.
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64 setsebool -P authlogin_nsswitch_use_ldap 1
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68 If you want to allow all domains to execute in fips_mode, you must turn
69 on the fips_mode boolean. Enabled by default.
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71 setsebool -P fips_mode 1
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75 If you want to allow confined applications to run with kerberos, you
76 must turn on the kerberos_enabled boolean. Enabled by default.
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78 setsebool -P kerberos_enabled 1
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82 If you want to allow system to run with NIS, you must turn on the
83 nis_enabled boolean. Disabled by default.
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85 setsebool -P nis_enabled 1
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89 If you want to allow confined applications to use nscd shared memory,
90 you must turn on the nscd_use_shm boolean. Disabled by default.
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92 setsebool -P nscd_use_shm 1
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97 The SELinux process type postfix_pickup_t can manage files labeled with
98 the following file types. The paths listed are the default paths for
99 these file types. Note the processes UID still need to have DAC per‐
100 missions.
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102 anon_inodefs_t
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105 postfix_pickup_tmp_t
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108 postfix_var_run_t
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110 /var/spool/postfix/pid/.*
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114 SELinux requires files to have an extended attribute to define the file
115 type.
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117 You can see the context of a file using the -Z option to ls
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119 Policy governs the access confined processes have to these files.
120 SELinux postfix_pickup policy is very flexible allowing users to setup
121 their postfix_pickup processes in as secure a method as possible.
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123 STANDARD FILE CONTEXT
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125 SELinux defines the file context types for the postfix_pickup, if you
126 wanted to store files with these types in a diffent paths, you need to
127 execute the semanage command to sepecify alternate labeling and then
128 use restorecon to put the labels on disk.
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130 semanage fcontext -a -t postfix_pickup_tmp_t '/srv/mypost‐
131 fix_pickup_content(/.*)?'
132 restorecon -R -v /srv/mypostfix_pickup_content
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134 Note: SELinux often uses regular expressions to specify labels that
135 match multiple files.
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137 The following file types are defined for postfix_pickup:
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141 postfix_pickup_exec_t
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143 - Set files with the postfix_pickup_exec_t type, if you want to transi‐
144 tion an executable to the postfix_pickup_t domain.
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148 postfix_pickup_tmp_t
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150 - Set files with the postfix_pickup_tmp_t type, if you want to store
151 postfix pickup temporary files in the /tmp directories.
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155 Note: File context can be temporarily modified with the chcon command.
156 If you want to permanently change the file context you need to use the
157 semanage fcontext command. This will modify the SELinux labeling data‐
158 base. You will need to use restorecon to apply the labels.
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162 semanage fcontext can also be used to manipulate default file context
163 mappings.
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165 semanage permissive can also be used to manipulate whether or not a
166 process type is permissive.
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168 semanage module can also be used to enable/disable/install/remove pol‐
169 icy modules.
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171 semanage boolean can also be used to manipulate the booleans
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174 system-config-selinux is a GUI tool available to customize SELinux pol‐
175 icy settings.
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179 This manual page was auto-generated using sepolicy manpage .
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183 selinux(8), postfix_pickup(8), semanage(8), restorecon(8), chcon(1),
184 sepolicy(8), setsebool(8)
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188postfix_pickup 19-05-30 postfix_pickup_selinux(8)