How to enable DKIM email signatures in amavisd-new and ISPConfig 3.0

NOTE: This post is about ISPConfig 3.0 and not 3.1 and newer. ISPConfig 3.1 and newer has DKIM support builtin, you can simply enable DKIM in ISPConfig 3.1 GUI now for the mail domain. DKIM is a system to verify the sender and integrity of emails. ISPConfig 3 uses amavisd-new as content filter for spam ... Read more

How can an email user in ISPConfig 3 change his password?

To allow email users in ISPConfig 3 that do not have a client login to change their password, you can use one of these webmail plugins: Plugin for roundcube: Plugin for Squirrelmail: Tutorial about installing the squirrelmail plugin:

Where is the ISPConfig 3 configuration file?

ISPConfig 3 has two different configuration files, one for the server part and one for the interface. ISPConfig 3 Interface The config file location is: /usr/local/ispconfig/interface/lib/ ISPConfig 3 Server The config file location is: /usr/local/ispconfig/server/lib/ The MySQL root password that is used to create new MySQL databases only is stored in the file: /usr/local/ispconfig/server/lib/mysql_clientdb.conf