samba-mirror/docs-xml/smbdotconf/domain/machinepasswordtimeout.xml

<samba:parameter name="machine password timeout"
                 context="G"
                 type="integer"
                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
	 <description>

	<para>
	If a Samba server is a member of a Windows NT or Active Directory Domain (see the <smbconfoption
	name="security">domain</smbconfoption> and
	<smbconfoption name="security">ads</smbconfoption> parameters),
	then periodically a running winbindd process will try and change
	the MACHINE ACCOUNT PASSWORD stored in the TDB called <filename moreinfo="none">secrets.tdb
	</filename>.  This parameter specifies how often this password will be changed, in seconds. The default is one
	week (expressed in seconds), the same as a Windows NT Domain member server.
	</para>

	<para>
	See also <citerefentry><refentrytitle>smbpasswd</refentrytitle> <manvolnum>8</manvolnum></citerefentry>,
	and the <smbconfoption name="security">domain</smbconfoption>
	and <smbconfoption name="security">ads</smbconfoption> parameters.
	</para>

</description>
<value type="default">604800</value>
</samba:parameter>