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# @(#) routers,v 1.3 1992/08/08 16:40:26 tron Exp
# This file defines the configuration of the router subsystem as
# compiled into the smail binary. By modifying the source files
# conf/EDITME, src/config.h or src/default.c the actual internal
# configuration can be changed. Thus, this should be matched up
# against thes files before assuming this is completely correct.
# force_paths - override file for routing
#
# This entry is not in the compiled-in routers, for now. However,
# this entry can be very useful for adding temporary override routes,
# if some paths are known to be useless for transient reasons, or for
# organizing internal networks without the use of map files. It can
# also be used to define UUCP sites that you MX for, if you are using
# DNS with the bind router. In the MX case, add an entry to the file
# /usr/lib/smail/forcepaths such as:
#
# .foo.org foo-uucp-gateway!%s
#
# to cause all E-mail to the foo.org domain to be sent to its uucp
# gateway, rather than being matched by the MX router, which will
# not correctly handle MX to UUCP gatewaying, if you use the bind
# version of the inet_hosts router, below.
#
# The file is defined to be an unsorted ASCII file, so that direct
# editing is possible and reasonable. The "always" attribute forces
# use of the router even if a later router (such as the bind version
# of inet_hosts) gets a better match (note that DNS wildcard matches
# count as complete hostname matches). Thus, with the .foo.org
# entry above, foo.foo.org would be matched here, even if foo.foo.org
# were matched by inet_hosts or the regular paths router.
#
#force_paths:
# driver=pathalias,
# transport=uux, # deliver using uux to rmail
# always; # force use even if some other
# # router gets a more complete match
#
# file=forcepaths, # plain ASCII file (unsorted)
# proto=lsearch, # use linear search
# optional, # ignore if the file does not exist
# inet_addrs and inet_hosts are only defined when BSD networking exists
# inet_addrs - match domain literals containing literal IP addresses
#
# For example, [128.103.1.1] will match harvard.harvard.edu on the internet.
# The library routine gethostbyaddr(3N) will be called to see if a reverse
# mapping to the cononical hostname is available.
inet_addrs:
driver=gethostbyaddr, # router to match IP domain literals
transport=smtp; # deliver using SMTP over TCP/IP
fail_if_error, # fail malformed domain literal addrs
check_for_local, # see if this is really the local host
# inet_hosts - match hostnames with gethostbyname(3N)
#
# Comment this out if you wish to use the bind version below, instead.
inet_hosts:
driver=gethostbyname, # match hosts with the library function
transport=smtp; # use default SMTP (may be UUCP-style)
-required, # no required domains
-domain, # no defined domain suffixes
-only_local_domain, # don't restrict to defined domains
# inet_hosts - alternate version using BIND to access the DNS
#
# This router is not compiled-in by default. It can be used as a
# replacement for the above inet_hosts router, if your system supports
# a bind compatible DNS resolver library. This should be used for
# systems on the internet.
#inet_hosts:
# driver=bind,
# transport=smtp; # use TCP/IP SMTP for delivery
#
# defnames, # use standard domain searching
# defer_no_connect, # try again if the nameserver is down
# -local_mx_okay, # fail (don't pass through) an MX
# # to the local host
# paths - route using a paths file, like that produced by the pathalias program
paths: driver=pathalias, # general-use paths router
transport=uux; # for matches, deliver over UUCP
file=paths, # sorted file containing path info
proto=bsearch, # use a binary search
# proto=dbm, # use a dbm files
optional, # ignore if the file does not exist
-required, # no required domains
domain=uucp, # strip ending ".uucp" before searching
# uucp_neighbors - match neighbors accessible over UUCP
uucp_neighbors:
driver=uuname, # use a program which returns neighbors
transport=uux;
cmd=/usr/bin/uuname, # specifically, use the uuname program
domain=uucp, # strip ending ".uucp" before searching
# smart_host - a partically specified smarthost director
#
# If the config file attribute smart_path is defined as a path from the
# local host to a remote host, then hostnames not matched otherwise will
# be sent off to the stated remote host. The config file attribute
# smart_transport can be used to specify a different transport.
#
# If the smart_path attribute is not defined, this router is ignored.
smart_host:
driver=smarthost, # special-case driver
transport=uux; # by default deliver over UUCP
-path, # use smart_path config file variable
# path=uunet, # alternate, set path in this file
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