process-mail.sh

process-mail.sh

#!/bin/bash

# $2 is the email sender.  We want to autoreply to them
# $4 is our filter user email address, typically filter@localhost
# Check the parameters below are right for your system

SENDMAIL="/usr/lib/sendmail"
DOMAIN="YOUR-DOMAIN-NAME-HERE.com"
LOCAL_AUTOREPLY_ADDRESS="filter@localhost"

if [ "$4" = $LOCAL_AUTOREPLY_ADDRESS ]; then
  echo "OK, I'll send a reply to |$2|"
  printf '%s\n' "Subject: Autoreply from $DOMAIN" \
    "From: Autoreply <autoreply@$DOMAIN>" \
    "To: Recipient <$2>" \
    "" \
    "--------------------------------------------------------------------------------" \
    " " \
    " This is the autoresponder for $DOMAIN.  Your mail was received!" \
    " " \
    "--------------------------------------------------------------------------------" | $SENDMAIL -oi -t
else
  echo "Not an autoreply address."
fi