def deSA(fp):
    import email, re
    m = email.message_from_string(fp.read())
    if m['X-Spam-Status']:
	if m['X-Spam-Status'].startswith('No'):
	    del m['X-Spam-Status']
	    del m['X-Spam-Level']
	else:
	    del m['X-Spam-Status']
	    del m['X-Spam-Level']
	    del m['X-Spam-Flag']
	    del m['X-Spam-Checker-Version']

	    pct = m['X-Spam-Prev-Content-Type']
	    if pct:
		del m['X-Spam-Prev-Content-Type']
		m['Content-Type'] = pct

	    pcte = m['X-Spam-Prev-Content-Transfer-Encoding']
	    if pcte:
		del m['Content-Transfer-Encoding']
		m['Content-Transfer-Encoding'] = pcte
		del m['X-Spam-Prev-Content-Transfer-Encoding']

	    body = m.get_payload()

	    subj = m['Subject']
	    del m['Subject']
	    m['Subject'] = re.sub(r'\*\*\*\*\*SPAM\*\*\*\*\* ', '', subj)

	    newbody = []
	    at_start = 1
	    for line in body.splitlines():
		if at_start and line.startswith('SPAM: '):
		    continue
		elif at_start:
		    at_start = 0
		else:
		    newbody.append(line)
	    m.set_payload("\n".join(newbody))


    return m

if __name__ == "__main__":
    import sys
    print deSA(open(sys.argv[1]))