first working implementation

altermime.py

@@ -0,0 +1,26 @@
+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)