Essentially I only want to allow my CentOS box to send mail to specific addresses (with patterns if possible).
Such addresses would be:
- email@example.com (in this instance I am using Gmail account with Plus Trick to serve as a recipient for a large number of fake users, however it's important that the server is not able to send to OTHER gmail users.
I've switched from Sendmail to Postfix on some friendly advice that Postfix is simply more configurable, but now I've made that switched and started digging, I'm getting just as frustrated as when I has sendmail!
I've been scouring postfix documents but there seems to be a void between where my understanding ends, and the documentation begins, and I'm failing to really gain much purchase on how to get started.
Thanks for any advice!