🚀 go-pugleaf

In article <1993Jan24.163250.7707@news.csuohio.edu>,
damin@randell.cba.csuohio.edu (Greg Boehnlein) writes:
> In other words, ALL incoming mail for xxx@xxx.xxx.fvnet.org needs to
> be routed to a sperate file where it can be parsed and distributed.

You forgot to say what mail system you use.  The following answer applies
to smail3, and includes extracts from config files that are in use here.
(Only names and places have been changed.)  I also assume that routing
to a file is a non-negotiable requirement.

Make sure that your router configuration ("routers" file) includes
a suitable override paths file (with the "force" attribute) that is
searched before any DNS lookups.  For example:

	# Special connections
	force-special:	driver=pathalias, always, method=paths;
		file = route/force-special, proto=lsearch, optional

(Notice that you can use the same old "method=paths" as usual.)

In the relevant paths file ("route/force-special" in this example),
specify a route to the domain of interest.  On the left hand side you
need to match the domain of interest (with a leading dot), and on the
right hand side you need to specify a dummy host name, that smail will
use internally for looking up the transport in the method file and for
expanding the ${host} variable.  For example:

	.special.some.domain	specialdom!%s

In the relevant methods file ("paths", in this example), specify the
delivery method to be used for the dummy host name.  For example:

	specialdom		special-batch

In the transport configuration ("transports" file), specify how the
chosen delivery method works.  For example:

	special-batch:
		# the appendfile driver can also accumulate in directories
		driver=appendfile,
		hbsmtp,			# send batched SMTP commands
		-max_addrs,		# no limit on number or total size
		-max_chars;		#  of recipient addresses.
		# files whose names begin with `q' will be placed here:
		dir=/usr/smail/spool/outq.special/${lc:host},
		user=specialuser,	# files will be owned by this user
		group=mail,		# and this group
		mode=0600		# and will have this mode

Now, any message to *@special.some.domain or to *@*.special.some.domain
will be stored as a file in the /usr/smail/spool/outq.special/specialdom
directory.  (The ${lc:host} just forces the name to lower case.)
Each file will have a name that starts with a "q", and will contain a
message in hbsmtp format.  Hbsmtp is half-baked BSMTP, without the HELO
and QUIT lines -- there will be a MAIL FROM line, one or more RCPT TO
lines, a DATA line, the message (with the hidden dot protocol), and a
dot line.

You might prefer to use the appendfile driver to append all messages to
a single file.  If so, just say "file=" instead of "dir=" in the relevant
transports entry.

--apb
Alan Barrett, Dept. of Electronic Eng., Univ. of Natal, Durban, South Africa
RFC822: barrett@ee.und.ac.za