Postfix and local domain.
 

Hi all, still kinda new to running my own mail server and was wondering if it's possible to setup my local network to where I only need 1 mail server running to use local ( domain ) delivery between 2 machines. Or does each machine need its own instance running in order for them to communicate? Anyone know a specific section in the documentation I should be looking at? Url's are helpful. :) I appreciate any help anyone gives me. Until then I'll be googlging and reading through postfix.org.

You need postfix running on each machine if you want smtp service on those machines. An alternative is to pop mail from a central server running postfix.

I've done exactly what you're trying to do, that is, set up my internal Linux machines with postfix to email logs and such to my primary workstation.

You'll need to modify postfix's main.cf file so that it doesn't do dns lookups, doesn't append a domain name to hostnames, and so forth. Here are the relevant options and their settings in my main.cf.