import subprocess
import sys

# disclaimer file
DISCLAIMER = "/etc/postfix/disclaimers/generic"

# Exit codes from <sysexits.h>
EX_UNAVAILABLE = 69

am = subprocess.run(["/usr/bin/altermime",
                        "--input=-",
                        f"--disclaimer={DISCLAIMER}",
                        f"--htmltoo",
                        "--force-for-bad-html",
                        #"--xheader='blablubb'",
                        ],
                        stdin=sys.stdin,
                        capture_output=True)

if am.returncode > 0:
    sys.exit(EX_UNAVAILABLE)

sendmailprocess = subprocess.Popen(["./sendmail"] + sys.argv[1:], stdout=subprocess.PIPE, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
sendmailprocess.communicate(input=am.stdout)       

sys.exit(0)