Provided by: courier-mta_0.47-13ubuntu5_i386 bug


       makepercentrelay - Build a list of %-relayed domains




       makepercentrelay  reads  /etc/courier/esmtppercentrelay.dir and creates
       /etc/courier/esmtppercentrelay.dat which is a binary database file. The
       files                 /etc/courier/esmtppercentrelay                and
       /etc/courier/esmtppercentrelay.dat specify  a  list  of  "percent-hack"
       domains.   /etc/courier/esmtppercentrelay   is   a   plain  text  file,
       containing  one  domain  per  line.  Courier  loads  the  contents   of
       /etc/courier/esmtppercentrelay  into  memory,  so  if you have a lot of
       domains,  you  will  want  to  use  the  binary  database  file.    The
       makepercentrelay   command   reads  /etc/courier/esmtppercentrelay.dir,
       which can be either a plain text file itself, or a directory containing
       plain  text  files. All files in the subdirectory are concatenated, and
       the binary database file is created from the result.

       Courier    can    use    both    /etc/courier/esmtppercentrelay     and
       /etc/courier/esmtppercentrelay.dat at the same time.  Usually you would
       put    a    couple    of    your    most    frequent     domains     in
       /etc/courier/esmtppercentrelay,     then     put     the     rest    in
       /etc/courier/esmtppercentrelay.dir, and use makepercentrelay to turn it
       into a database file.

       "percent-hack"  domains are a list of domains for which Courier accepts
       mail via ESMTP addressed  as  "local%percent.hack.domain@local.domain",
       where     "percent.hack.domain"     is     a     domain     found    in
       /etc/courier/esmtppercentrelay  or  /etc/courier/esmtppercentrelay.dat,
       and  "local.domain" is any domain found in /etc/courier/locals. Courier
       removes   the   local   domain,   and   rewrites   the    address    as
       "local@percent.hack.domain", then attempts to deliver it.

       The  percent hack applies only to mail received via ESMTP. Courier does
       not check this list of domains if the message is received via any other
       way  (such  as  by  running /usr/bin/sendmail directly from the command
       line).  "percent.hack.domain" would likely to be a domain that  Courier
       knows  how  to  handle  via  some other means.  It might be an entry in
       /etc/courier/aliases, or an entry in /etc/courier/esmtproutes.


       esmtpd(8), makealiases(8).