#! /bin/sh
# syntax: readsignmail   <file>

if test $# -le 0
then
  echo  "syntax: readsignmail   <file>"
  exit
fi

RANDFILE=randomfile
export RANDFILE
openssl smime -CAfile ca_cert.pem -verify  -in $1 -out $1.txt -signer sender_cert.pem
openssl x509 -in sender_cert.pem -text -noout | grep Subject:
more $1.txt