From dlai@hopper.mti.sgi.com Mon Dec  9 16:35:13 1996
Date: Sun, 8 Dec 1996 00:38:08 -0800 (PST)
From: David Lai <dlai@hopper.mti.sgi.com>
To: ryan@pcslink.com, chris@westnet.com
Subject: Re: New stuff for the /providers/ page

I did a bit of improvement over Ryans sendmail suggestion.  Ryan's
fix removes an important feature of Robert Sanders fix, namely
mapping unknown users to a postmaster, ie: (from rsanders' email)

	someplace.com           spowner

With these changes, one can use the entire mapping of domains
by using a key with '@'.

# virtual domain handler
# database
# key           value   meaning
# ========      ====    ========================
# x@d           u       x@d -> u
# d             u       unmatched_user@d -> u
# @a            b       u@a -> u@b
#
R$+ < @ $+ . >          $: $1 < @ $2 > .
R$+ < @ $+ > $*         $: $(maildomains $1@$2 $: $1 < @ $2 > $3 $)
R$+ < @ $+ > $*         $: $(maildomains $2 $: $1 < @ $2 > $3 $)
R$+ < @ $+ > $*         $: $1 < @ $(maildomains @$2 $: $2  $) > $3
R$+ < @ $+ @ $+ > $*    $: $2 < @ $3 > $4
R$+ < @ $+ > .          $: $1 < @ $2 . >
# end of virtual domain handler

Send comments + improvements to dlai@sgi.com
--
David Lai	http://reality.sgi.com/dlai