I hardly try to setup a user policy / rule wich should function as follows Firstly, the Mailserver is based / operated with ISPConfig (Postfix/Dovecot/Maria-DB) I`d like to add following rules Mailuser (ex. boss) is allowed to send to all domains, all other mailusers should only be enabled to sent to only to the own domain. I tried a configuration folllowing linuxtopia restricting user destination, but that did not work but it did not work. I also tried to solve it with header_checks as described in the postfix manuals, this works but only on ALL mail users. Is there a solution for this. Maybe with ISPConfig
