1postfix_bounce_selinux(8)SELinux Policy postfix_bouncepostfix_bounce_selinux(8)
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6 postfix_bounce_selinux - Security Enhanced Linux Policy for the post‐
7 fix_bounce processes
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10 Security-Enhanced Linux secures the postfix_bounce processes via flexi‐
11 ble mandatory access control.
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13 The postfix_bounce processes execute with the postfix_bounce_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_bounce_t
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24 The postfix_bounce_t SELinux type can be entered via the post‐
25 fix_bounce_exec_t file type.
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27 The default entrypoint paths for the postfix_bounce_t domain are the
28 following:
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30 /usr/libexec/postfix/bounce
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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_bounce policy is very flexible allowing users to setup their
40 postfix_bounce processes in as secure a method as possible.
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42 The following process types are defined for postfix_bounce:
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44 postfix_bounce_t
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46 Note: semanage permissive -a postfix_bounce_t can be used to make the
47 process type postfix_bounce_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_bounce policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run postfix_bounce with the
56 tightest access possible.
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60 If you want to allow all domains to execute in fips_mode, you must turn
61 on the fips_mode boolean. Enabled by default.
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63 setsebool -P fips_mode 1
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67 If you want to allow system to run with NIS, you must turn on the
68 nis_enabled boolean. Disabled by default.
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70 setsebool -P nis_enabled 1
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75 The SELinux process type postfix_bounce_t can manage files labeled with
76 the following file types. The paths listed are the default paths for
77 these file types. Note the processes UID still need to have DAC per‐
78 missions.
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80 anon_inodefs_t
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83 postfix_spool_bounce_t
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85 /var/spool/postfix/bounce(/.*)?
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87 postfix_spool_t
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89 /var/spool/postfix.*
90 /var/spool/postfix/defer(/.*)?
91 /var/spool/postfix/flush(/.*)?
92 /var/spool/postfix/deferred(/.*)?
93 /var/spool/postfix/maildrop(/.*)?
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95 postfix_var_run_t
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97 /var/spool/postfix/pid/.*
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101 SELinux requires files to have an extended attribute to define the file
102 type.
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104 You can see the context of a file using the -Z option to ls
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106 Policy governs the access confined processes have to these files.
107 SELinux postfix_bounce policy is very flexible allowing users to setup
108 their postfix_bounce processes in as secure a method as possible.
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110 STANDARD FILE CONTEXT
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112 SELinux defines the file context types for the postfix_bounce, if you
113 wanted to store files with these types in a diffent paths, you need to
114 execute the semanage command to sepecify alternate labeling and then
115 use restorecon to put the labels on disk.
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117 semanage fcontext -a -t postfix_bounce_tmp_t '/srv/mypost‐
118 fix_bounce_content(/.*)?'
119 restorecon -R -v /srv/mypostfix_bounce_content
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121 Note: SELinux often uses regular expressions to specify labels that
122 match multiple files.
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124 The following file types are defined for postfix_bounce:
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128 postfix_bounce_exec_t
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130 - Set files with the postfix_bounce_exec_t type, if you want to transi‐
131 tion an executable to the postfix_bounce_t domain.
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135 postfix_bounce_tmp_t
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137 - Set files with the postfix_bounce_tmp_t type, if you want to store
138 postfix bounce temporary files in the /tmp directories.
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142 Note: File context can be temporarily modified with the chcon command.
143 If you want to permanently change the file context you need to use the
144 semanage fcontext command. This will modify the SELinux labeling data‐
145 base. You will need to use restorecon to apply the labels.
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149 semanage fcontext can also be used to manipulate default file context
150 mappings.
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152 semanage permissive can also be used to manipulate whether or not a
153 process type is permissive.
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155 semanage module can also be used to enable/disable/install/remove pol‐
156 icy modules.
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158 semanage boolean can also be used to manipulate the booleans
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161 system-config-selinux is a GUI tool available to customize SELinux pol‐
162 icy settings.
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166 This manual page was auto-generated using sepolicy manpage .
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170 selinux(8), postfix_bounce(8), semanage(8), restorecon(8), chcon(1),
171 sepolicy(8), setsebool(8)
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175postfix_bounce 21-03-26 postfix_bounce_selinux(8)