1As you've seen, qmail has essentially no pre-compilation configuration. 2You should never have to recompile it unless you want to change the 3qmail home directory, usernames, or uids. 4 5qmail does allow quite a bit of easy post-installation configuration. If 6you care how your machine greets other machines via SMTP, for example, 7you can put an appropriate line into /var/qmail/control/smtpgreeting. 8 9But this is all optional---if control/smtpgreeting doesn't exist, qmail 10will do something reasonable by default. You shouldn't worry much about 11configuration right now. You can always come back and tune things later. 12 13There's one big exception. You MUST tell qmail your hostname. Just run 14the config-fast script: 15 16 # ./config-fast your.full.host.name 17 18config-fast puts your.full.host.name into control/me. It also puts it 19into control/locals and control/rcpthosts, so that qmail will accept 20mail for your.full.host.name. 21 22You can instead use the config script, which looks up your host name in 23DNS: 24 25 # ./config 26 27config also looks up your local IP addresses in DNS to decide which 28hosts to accept mail for. 29 30(Why doesn't qmail do these lookups on the fly? This was a deliberate 31design decision. qmail does all its local functions---header rewriting, 32checking if a recipient is local, etc.---without talking to the network. 33The point is that qmail can continue accepting and delivering local mail 34even if your network connection goes down.) 35 36Next, read through FAQ for information on setting up optional features 37like masquerading. If you really want to learn right now what all the 38configuration possibilities are, see qmail-control.0. 39