Stupidly naive, but I gotta ask it, because I don’t know the answer. And I should.
OK, I’m the IT person for a smallish company; I’m self-taught on just about everything, so there are occasional yawning gaps in my expertise; most of what I’ve done so far has been oriented around setting up/administering workstations & hardware, developing software, designing and administering databases, with a bit of peer networking and internet stuff thrown in.
I’m determined to exand my expertise on networking and servers - trouble is that there seem to be a few things that everybody just knows - I guess you must learn them really early on - it’s hard enough even to find out how to ask about it - because everybody just takes it all for granted.
OK, today it’s domains. I’ve sent myself on a couple of Linux server courses and they were great - I really understood about 95% of it and I’m quite happy pottering around with Linux now; a bit iffy on installing extra software on it, but that will come. I’ve set up a test server (actually running SME server, which is a very customised/simplified distribution of Linux specifically designed to act as a web/file server and gateway) and I’m playing with it. But I’m not exactly sure what it means when I have to define the primary domain for the server.
Please don’t laugh.
OK, we’ve registered a internet domain name and we’re paying an ISP to host it etc (for simplicity, let’s call this mangetout.com), I want my mail server to collect (or perhaps receive) emails from this ISP and distribute them/make available to clients on the LAN. Lets say those clients are email@example.com and firstname.lastname@example.org. Do I have to define the primary domain of my server as mangetout.com? On the one hand, this seems to be how it wants to manage the users in terms of email, but on the other hand, it seems wrong - my server isn’t actually hosting that domain in the same sense that my ISP is hosting for mangetout.com.
I don’t want to have the DNS point to my static IP and host everything myself - I’m quite happy using an ISP right now.
OK, when you’re done marvelling at my ignorance, please put me out of my misery; what does ‘domain’ mean in the context of an intranet?