1qmail_smtpd_selinux(8) SELinux Policy qmail_smtpd qmail_smtpd_selinux(8)
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6 qmail_smtpd_selinux - Security Enhanced Linux Policy for the
7 qmail_smtpd processes
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10 Security-Enhanced Linux secures the qmail_smtpd processes via flexible
11 mandatory access control.
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13 The qmail_smtpd processes execute with the qmail_smtpd_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep qmail_smtpd_t
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24 The qmail_smtpd_t SELinux type can be entered via the
25 qmail_smtpd_exec_t file type.
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27 The default entrypoint paths for the qmail_smtpd_t domain are the fol‐
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30 /var/qmail/bin/qmail-smtpd
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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 qmail_smtpd policy is very flexible allowing users to setup their
40 qmail_smtpd processes in as secure a method as possible.
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42 The following process types are defined for qmail_smtpd:
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44 qmail_smtpd_t
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46 Note: semanage permissive -a qmail_smtpd_t can be used to make the
47 process type qmail_smtpd_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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53 SELinux policy is customizable based on least access required.
54 qmail_smtpd policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run qmail_smtpd with the tight‐
56 est 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 confined applications to run with kerberos, you
68 must turn on the kerberos_enabled boolean. Disabled by default.
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70 setsebool -P kerberos_enabled 1
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75 SELinux requires files to have an extended attribute to define the file
76 type.
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78 You can see the context of a file using the -Z option to ls
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80 Policy governs the access confined processes have to these files.
81 SELinux qmail_smtpd policy is very flexible allowing users to setup
82 their qmail_smtpd processes in as secure a method as possible.
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84 The following file types are defined for qmail_smtpd:
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88 qmail_smtpd_exec_t
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90 - Set files with the qmail_smtpd_exec_t type, if you want to transition
91 an executable to the qmail_smtpd_t domain.
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95 Note: File context can be temporarily modified with the chcon command.
96 If you want to permanently change the file context you need to use the
97 semanage fcontext command. This will modify the SELinux labeling data‐
98 base. You will need to use restorecon to apply the labels.
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102 semanage fcontext can also be used to manipulate default file context
103 mappings.
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105 semanage permissive can also be used to manipulate whether or not a
106 process type is permissive.
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108 semanage module can also be used to enable/disable/install/remove pol‐
109 icy modules.
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111 semanage boolean can also be used to manipulate the booleans
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114 system-config-selinux is a GUI tool available to customize SELinux pol‐
115 icy settings.
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119 This manual page was auto-generated using sepolicy manpage .
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123 selinux(8), qmail_smtpd(8), semanage(8), restorecon(8), chcon(1),
124 sepolicy(8), setsebool(8)
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128qmail_smtpd 19-12-02 qmail_smtpd_selinux(8)