12/17/2001
Qmail Build standard

Qmail is patched with tarpit+relaymailfrom.patch before being compiled.
Qmail is installed as per its stock documents.

The startup "rc" script for qmail is based on the procmail startup script.
Instead of executing procmail, it executes filter_mail, a script written to
implement the ".mailban" anti-spam technique.

Qmail's configuration is fairly standard. Some files are effectively duplicates:
	defaultdomain == me
	locals ==  rcpthosts

We take advantage of Qmail's virtualdomains configuration file in order to 
have mail support for virtual domains. This piece gets a little tricky.
in the virtualdomains file, a proper syntax to handle virtualdomain delivery
is "domain:username". for example, "jrlweb.com:mailjrl" will deliver all mail
for jrlweb.com to the user "mailjrl".

We follow the standard of creating user accounts for virtualdomains like so:
	The username is mailXXX (where XXX is a three-letter short name for 
	 the domain name).
	The user's UID is >100, <1000.
	The user's GID is 102 (qmail).
	The user's shell is /dev/null.
	The user's home directory is /var/qmail/alias/mailXXX.

In this user's home directory, use qmail's standard .qmail alias delivery 
mechanism. Create a .qmail-webmaster file in that home directory, where the
contents of the file are "&email-address@to-deliver-to.com".

In addition to qmail's standard configuration is the "relaymailfrom" file.
Its syntax is extremely simple. Each line is a domain name which is allowed
to be relayed through the server. "@domain.com" will forward any mail from
any-user@domain.com. "domain.com" will forward any mail from 
any-user@any-server.domain.com. This can be roughly based on the locals or 
 rcpthosts file.