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Annotation of 43BSDTahoe/usr.lib/sendmail/cf/m4/rule0.m4, revision 1.1.1.1

1.1       root        1: divert(10)
                      2: #
                      3: #  Sendmail
                      4: #  Copyright (c) 1983  Eric P. Allman
                      5: #  Berkeley, California
                      6: #
                      7: #  Copyright (c) 1983 Regents of the University of California.
                      8: #  All rights reserved.  The Berkeley software License Agreement
                      9: #  specifies the terms and conditions for redistribution.
                     10: #
                     11: #      @(#)rule0.m4    1.9 (Berkeley) 9/1/87
                     12: #
                     13: divert(0)
                     14: ############################################################
                     15: ############################################################
                     16: #####
                     17: #####          RULESET ZERO PREAMBLE
                     18: #####
                     19: #####  The beginning of ruleset zero is constant through all
                     20: #####  configurations.
                     21: #####
                     22: ############################################################
                     23: ############################################################
                     24: 
                     25: S0
                     26: 
                     27: # first make canonical
                     28: R$*<$*>$*              $1$2$3                          defocus
                     29: R$+                    $:$>3$1                         make canonical
                     30: 
                     31: # handle special cases
                     32: R$*<@[$+]>$*           $:$1<@$[[$2]$]>$3               lookup numeric internet addr
                     33: R$*<@[$+]>$*           $#tcp$@[$2]$:$1@[$2]$3          numeric internet spec
                     34: R$+                    $:$>6$1
                     35: R$-<@$w>               $#local$:$1
                     36: R@                     $#error$:Invalid address        handle <> form
                     37: 
                     38: # canonicalize using the nameserver if not internal domain
                     39: R$*<@$*.$~I>$*         $:$1<@$[$2.$3$]>$4
                     40: R$*<@$->$*             $:$1<@$[$2$]>$3
                     41: R$*<@$->$*             $:$1<@$2.$D>$3                  if nameserver fails
                     42: 
                     43: # now delete the local info
                     44: R<@$w>:$*              $@$>0$1                         @here:... -> ...
                     45: R$*<@$w>               $@$>0$1                         ...@here -> ...
                     46: 
                     47: # forward around hosts with communication problems
                     48: R$*<@$=F>$*            $#tcp$@$F$:$1<@$2>$3            reroute message
                     49: 
                     50: ##################################
                     51: #  End of ruleset zero preamble  #
                     52: ##################################

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