Allow multiple different destinations.

main.py

+#!/usr/bin/env python3
+
 import smtpd
 import asyncore
 from email import message_from_bytes
@@ -17,7 +19,15 @@ class CustomSMTPServer(smtpd.SMTPServer):
             print("Title missing")
             return
 
-        if 'massutskick@vastgota.nation.liu.se' not in msg.get('To'):
+        valid_destinations = [
+                'massutskick@vastgota.nation.liu.se',
+                'massutskick@vastgota.lysator.liu.se',
+                ]
+
+        for destination in valid_destinations:
+            if destination in msg.get('To'):
+                break
+        else:
             print('Will only publish massutskick')
             return