Hello, is there a way to specify IP address of sender dependant on domain of sender on ISPConfig 3? I found this tutorial: https://www.benjaminwiedmann.net/se...transport-maps-with-postfix-the-easy-way.html but I am aware to set it on production server. Does anybody have experience with setup of multiple sender IP's or is it possible to set this in ISPConfig 3 directly? We use multiserver setup with separate mail server which is used for sending mails from all web server where is satellite mode postfix. Thanks for any suggestion.