src/util/unknownuser.sh

   1 #! /bin/sh
   2
   3 # This is a sample script for demonstrating how to handle unknown users in
   4 # a more friendly way than just returning a "user unknown" error. It can
   5 # be called from a pipe transport set up like this:
   6
   7 # unknownuser_pipe:
   8 #   driver = pipe;
   9 #   command = "/opt/exim/util/unknownuser.sh",
  10 #   ignore_status,
  11 #   return_output,
  12 #   user = nobody
  13
  14 # which is specified by a smartuser director set up like this:
  15
  16 # unknownuser:
  17 #   transport = unknownuser_pipe,
  18 #   no_verify,
  19 #   driver = smartuser;
  20
  21 # Any output generated by this script is then returned to the sender of
  22 # the message. You can run any commands you like at this point, for example,
  23 # to attempt fuzzy matches on the local part of the address. Here we just
  24 # give a bland message, demonstrating the availability of the variables
  25 # $LOCAL_PART and $DOMAIN.
  26
  27 cat <<End
  28 "$LOCAL_PART" is not a known user mailbox in the domain "$DOMAIN".
  29 End
  30
  31
  32