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<h1 align="center">postfix_local_selinux</h1>
<a href="#NAME">NAME</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#ENTRYPOINTS">ENTRYPOINTS</a><br>
<a href="#PROCESS TYPES">PROCESS TYPES</a><br>
<a href="#BOOLEANS">BOOLEANS</a><br>
<a href="#MANAGED FILES">MANAGED FILES</a><br>
<a href="#FILE CONTEXTS">FILE CONTEXTS</a><br>
<a href="#COMMANDS">COMMANDS</a><br>
<a href="#AUTHOR">AUTHOR</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
<h2>NAME
<a name="NAME"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">postfix_local_selinux
− Security Enhanced Linux Policy for the postfix_local
processes</p>
<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">Security-Enhanced
Linux secures the postfix_local processes via flexible
mandatory access control.</p>
<p style="margin-left:11%; margin-top: 1em">The
postfix_local processes execute with the postfix_local_t
SELinux type. You can check if you have these processes
running by executing the <b>ps</b> command with the
<b>−Z</b> qualifier.</p>
<p style="margin-left:11%; margin-top: 1em">For
example:</p>
<p style="margin-left:11%; margin-top: 1em"><b>ps -eZ |
grep postfix_local_t</b></p>
<h2>ENTRYPOINTS
<a name="ENTRYPOINTS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">The
postfix_local_t SELinux type can be entered via the
<b>postfix_local_exec_t</b> file type.</p>
<p style="margin-left:11%; margin-top: 1em">The default
entrypoint paths for the postfix_local_t domain are the
following:</p>
<p style="margin-left:11%; margin-top: 1em">/usr/libexec/postfix/local</p>
<h2>PROCESS TYPES
<a name="PROCESS TYPES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">SELinux defines
process types (domains) for each process running on the
system</p>
<p style="margin-left:11%; margin-top: 1em">You can see the
context of a process using the <b>−Z</b> option to
<b>ps</b></p>
<p style="margin-left:11%; margin-top: 1em">Policy governs
the access confined processes have to files. SELinux
postfix_local policy is very flexible allowing users to
setup their postfix_local processes in as secure a method as
possible.</p>
<p style="margin-left:11%; margin-top: 1em">The following
process types are defined for postfix_local:</p>
<p style="margin-left:11%; margin-top: 1em"><b>postfix_local_t</b></p>
<p style="margin-left:11%; margin-top: 1em">Note:
<b>semanage permissive -a postfix_local_t</b> can be used to
make the process type postfix_local_t permissive. SELinux
does not deny access to permissive process types, but the
AVC (SELinux denials) messages are still generated.</p>
<h2>BOOLEANS
<a name="BOOLEANS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">SELinux policy
is customizable based on least access required.
postfix_local policy is extremely flexible and has several
booleans that allow you to manipulate the policy and run
postfix_local with the tightest access possible.</p>
<p style="margin-left:11%; margin-top: 1em">If you want to
allow postfix_local domain full write access to mail_spool
directories, you must turn on the
postfix_local_write_mail_spool boolean. Enabled by
default.</p>
<p style="margin-left:11%; margin-top: 1em"><b>setsebool -P
postfix_local_write_mail_spool 1</b></p>
<p style="margin-left:11%; margin-top: 1em">If you want to
allow all domains to execute in fips_mode, you must turn on
the fips_mode boolean. Enabled by default.</p>
<p style="margin-left:11%; margin-top: 1em"><b>setsebool -P
fips_mode 1</b></p>
<p style="margin-left:11%; margin-top: 1em">If you want to
allow system to run with NIS, you must turn on the
nis_enabled boolean. Disabled by default.</p>
<p style="margin-left:11%; margin-top: 1em"><b>setsebool -P
nis_enabled 1</b></p>
<p style="margin-left:11%; margin-top: 1em">If you want to
support NFS home directories, you must turn on the
use_nfs_home_dirs boolean. Disabled by default.</p>
<p style="margin-left:11%; margin-top: 1em"><b>setsebool -P
use_nfs_home_dirs 1</b></p>
<p style="margin-left:11%; margin-top: 1em">If you want to
support SAMBA home directories, you must turn on the
use_samba_home_dirs boolean. Disabled by default.</p>
<p style="margin-left:11%; margin-top: 1em"><b>setsebool -P
use_samba_home_dirs 1</b></p>
<h2>MANAGED FILES
<a name="MANAGED FILES"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">The SELinux
process type postfix_local_t can manage files labeled with
the following file types. The paths listed are the default
paths for these file types. Note the processes UID still
need to have DAC permissions.</p>
<p style="margin-left:11%; margin-top: 1em"><b>cifs_t</b></p>
<p style="margin-left:11%; margin-top: 1em"><b>dovecot_spool_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/var/spool/dovecot(/.*)?</p>
<p style="margin-left:11%; margin-top: 1em"><b>ecryptfs_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/home/[^/]+/.Private(/.*)?
<br>
/home/[^/]+/.ecryptfs(/.*)?</p>
<p style="margin-left:11%; margin-top: 1em"><b>fusefs_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/var/run/user/[0-9]+/gvfs</p>
<p style="margin-left:11%; margin-top: 1em"><b>krb5_host_rcache_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/var/tmp/krb5_0.rcache2
<br>
/var/cache/krb5rcache(/.*)? <br>
/var/tmp/nfs_0 <br>
/var/tmp/DNS_25 <br>
/var/tmp/host_0 <br>
/var/tmp/imap_0 <br>
/var/tmp/HTTP_23 <br>
/var/tmp/HTTP_48 <br>
/var/tmp/ldap_55 <br>
/var/tmp/ldap_487 <br>
/var/tmp/ldapmap1_0</p>
<p style="margin-left:11%; margin-top: 1em"><b>mail_home_rw_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/root/Maildir(/.*)?
<br>
/root/.esmtp_queue(/.*)? <br>
/var/lib/arpwatch/.esmtp_queue(/.*)? <br>
/home/[^/]+/.maildir(/.*)? <br>
/home/[^/]+/Maildir(/.*)? <br>
/home/[^/]+/.esmtp_queue(/.*)?</p>
<p style="margin-left:11%; margin-top: 1em"><b>mailman_data_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/etc/mailman.*
<br>
/var/lib/mailman(/.*)? <br>
/var/spool/mailman.*</p>
<p style="margin-left:11%; margin-top: 1em"><b>nfs_t</b></p>
<p style="margin-left:11%; margin-top: 1em"><b>postfix_local_tmp_t</b></p>
<p style="margin-left:11%; margin-top: 1em"><b>postfix_spool_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/var/spool/postfix.*
<br>
/var/spool/postfix/defer(/.*)? <br>
/var/spool/postfix/flush(/.*)? <br>
/var/spool/postfix/deferred(/.*)? <br>
/var/spool/postfix/maildrop(/.*)?</p>
<p style="margin-left:11%; margin-top: 1em"><b>postfix_var_run_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/var/spool/postfix/pid/.*</p>
<p style="margin-left:11%; margin-top: 1em"><b>user_home_t</b></p>
<p style="margin-left:11%; margin-top: 1em">/home/[^/]+/.+</p>
<h2>FILE CONTEXTS
<a name="FILE CONTEXTS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">SELinux
requires files to have an extended attribute to define the
file type.</p>
<p style="margin-left:11%; margin-top: 1em">You can see the
context of a file using the <b>−Z</b> option to
<b>ls</b></p>
<p style="margin-left:11%; margin-top: 1em">Policy governs
the access confined processes have to these files. SELinux
postfix_local policy is very flexible allowing users to
setup their postfix_local processes in as secure a method as
possible.</p>
<p style="margin-left:11%; margin-top: 1em"><b>STANDARD
FILE CONTEXT</b></p>
<p style="margin-left:11%; margin-top: 1em">SELinux defines
the file context types for the postfix_local, if you wanted
to store files with these types in a different paths, you
need to execute the semanage command to specify alternate
labeling and then use restorecon to put the labels on
disk.</p>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
fcontext -a -t postfix_local_tmp_t
’/srv/mypostfix_local_content(/.*)?’ <br>
restorecon -R -v /srv/mypostfix_local_content</b></p>
<p style="margin-left:11%; margin-top: 1em">Note: SELinux
often uses regular expressions to specify labels that match
multiple files.</p>
<p style="margin-left:11%; margin-top: 1em"><i>The
following file types are defined for postfix_local:</i></p>
<p style="margin-left:11%; margin-top: 1em"><b>postfix_local_exec_t</b></p>
<p style="margin-left:11%; margin-top: 1em">- Set files
with the postfix_local_exec_t type, if you want to
transition an executable to the postfix_local_t domain.</p>
<p style="margin-left:11%; margin-top: 1em"><b>postfix_local_tmp_t</b></p>
<p style="margin-left:11%; margin-top: 1em">- Set files
with the postfix_local_tmp_t type, if you want to store
postfix local temporary files in the /tmp directories.</p>
<p style="margin-left:11%; margin-top: 1em">Note: File
context can be temporarily modified with the chcon command.
If you want to permanently change the file context you need
to use the <b>semanage fcontext</b> command. This will
modify the SELinux labeling database. You will need to use
<b>restorecon</b> to apply the labels.</p>
<h2>COMMANDS
<a name="COMMANDS"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
fcontext</b> can also be used to manipulate default file
context mappings.</p>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
permissive</b> can also be used to manipulate whether or not
a process type is permissive.</p>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
module</b> can also be used to enable/disable/install/remove
policy modules.</p>
<p style="margin-left:11%; margin-top: 1em"><b>semanage
boolean</b> can also be used to manipulate the booleans</p>
<p style="margin-left:11%; margin-top: 1em"><b>system-config-selinux</b>
is a GUI tool available to customize SELinux policy
settings.</p>
<h2>AUTHOR
<a name="AUTHOR"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">This manual
page was auto-generated using <b>sepolicy manpage .</b></p>
<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>
<p style="margin-left:11%; margin-top: 1em">selinux(8),
postfix_local(8), semanage(8), restorecon(8), chcon(1),
sepolicy(8), setsebool(8)</p>
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