docker-mx-server/postfixadmin/postfixadmin-3.0/ADDITIONS/squirrelmail-plugin/config.php.sample

<?php

$CONF = array();
$CONF['xmlrpc_url'] = 'http://postfixadmin.local/postfixadmin/xmlrpc.php';

// Virtual Vacation
// If you use virtual vacation for you mailbox users set this to 'true'.
// NOTE: Make sure that you install the vacation module!!

//$AllowVacation = true;    // true or false
global $AllowVacation;
$AllowVacation = true;

// Change Password
// Enables user to change the POP3/IMAP Password.
//$AllowChangePass = true;    // true or false
global $AllowChangePass;
$AllowChangePass = true;

// Minimum password length - set to Zero to not care, otherwise the number of 
// characters a password must be longer than.
$CONF['min_password_length'] = 5;