Hi all, First, I'm not too familiar with Postfix. I've always run Exim. On the server I've been testing ISPConfig with, I had originally used Exim and had the mail modules in ISPConfig disabled. In that configuration, when I sent an email with a PHP script the from address was correctly rewritten with "email@example.com". I thought it might be handy to have some mail functionality so I replaced Exim with Postfix. Email is working but now when I send mail with a PHP script the from address is not rewritten like it should be. Does anyone know what setting I might be missing in Postfix? I used the config from the perfect server docs and I've verified that the sendmail -f flag is set correctly with a phpinfo file in that site. Thanks!