server/apps/spring-app/src/main/resources/usersrepository.xml

<?xml version="1.0"?>
<!--
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  to you under the Apache License, Version 2.0 (the            
  "License"); you may not use this file except in compliance   
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    http://www.apache.org/licenses/LICENSE-2.0                 
                                                               
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<!--
   This template file can be used as example for James Server configuration
   DO NOT USE IT AS SUCH AND ADAPT IT TO YOUR NEEDS
-->
 
<!-- See http://james.apache.org/server/3/config.html for usage -->

<!-- Configure User Repositories here. -->

<!-- -->
<!-- User repositories are required for the following purposes: -->
<!--    - storing James user information and authentication data. -->
<!-- -->
 
<!-- JPA based backend. Support password algorithm are:
  MD5, SHA-256, SHA-512, NONE
-->
<usersrepository name="LocalUsers" class="org.apache.james.user.jpa.JPAUsersRepository">
    <algorithm>SHA-512</algorithm>
    <enableVirtualHosting>true</enableVirtualHosting>

    <!-- User's name. Allow an user to access to the <a href="https://tools.ietf.org/html/rfc4616#section-2">impersonation command</a>, acting on the behalf of any user. -->
    <!--
         <administratorId>bob@domain.tld</administratorId>
    -->
</usersrepository>

<!-- Read-Only LDAP based UsersRepository -->
<!--
<repository name="LocalUsers" class="org.apache.james.user.ldap.ReadOnlyUsersLDAPRepository" ldapHost="ldap://myldapserver:389" 
    principal="uid=ldapUser,ou=system" credentials="password" userBase="ou=People,o=myorg.com,ou=system" userIdAttribute="uid"/>;
-->