Hello to all Before I go into a long configuration, I prefer to have the opinion of advanced users. I have a machine configured with ISPConfig and postfix etc... as a mail server. I have configured a second machine to use some software and not to overload my main machine with my websites. On the second machine I have configured WeKan (kanban software) which needs a mail server to communicate with the outside world (notifications, registration confirmation...) My question is; can I configure an MTA on this machine referring to my main machine (smtp / imap) or do I have to configure a complete and autonomous MTA? Thanks to you.