#!/bin/sh

# Clean an exim queue of frozen bounce messages.
# Usage: $0 [address] [nofreeze]

# If an [address] option is given it is used as a regexp to match against the
# sender of the addresses to remove

# If the [nofreeze] option is given (can be any string) then the
# mail doesn't have to be frozen. Use with care.

PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH

if [ -n "$2" ]; then
  fr="$2"
else
  fr=' \*\*\* frozen \*\*\*'
fi

# if you have a version of exim too old to use the r option, remove it.
exim -bpru | \
  awk 'BEGIN {
         rmfunct="exim -Mrm "
       }

       /^ ?[0-9].*<'"$1"'>'"$fr"'$/ {
         rmlist= rmlist " " $3; ++num
         if (num > 50) {
           if (system(rmfunct rmlist ">/dev/null") !=0) {
             print "Call to " rmfunct " " rmlist " failed."
           } else {
             total+=num; num=0; rmlist=""
           }
         }
       }

       END {
         if (num > 0) {
           if (system(rmfunct rmlist ">/dev/null") !=0) {
             print "Call to " rmfunct " " rmlist " failed."
           } else {
             total+=num
           }
         }
         if (total > 0) {
           print total " message[s] removed."
         }
       }'