make the 'last_activity' field in /tickets show the actual last activity by making it a virtual field

core/mail/migrations/0004_alter_emailattachment_file.py

@@ -0,0 +1,19 @@
+# Generated by Django 4.2.7 on 2024-01-10 19:04
+
+from django.db import migrations, models
+import files.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mail', '0003_emailattachment'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='emailattachment',
+            name='file',
+            field=models.FileField(upload_to=files.models.hash_upload),
+        ),
+    ]

core/mail/protocol.py

@@ -158,8 +158,8 @@ def receive_email(envelope, log=None):
         log.warning("Header to does not match envelope to")
         log.info(f"Header to: {header_to}, envelope to: {envelope.rcpt_tos[0]}")
 
-    recipient = envelope.rcpt_tos[0].lower()
-    sender = envelope.mail_from
+    recipient = envelope.rcpt_tos[0].lower() if envelope.rcpt_tos else header_to.lower()
+    sender = envelope.mail_from if envelope.mail_from else header_from
     subject = parsed.get('Subject')
     subject = unescape_and_decode_quoted_printable(subject)
     subject = unescape_and_decode_base64(subject)
@@ -188,7 +188,7 @@ def receive_email(envelope, log=None):
             in_reply_to=header_message_id, event=target_event, issue_thread=active_issue_thread)
         reply = make_reply(reply_email, references)
     else:
-        #change state if not new
+        # change state if not new
         if active_issue_thread.state != 'pending_new':
             active_issue_thread.state = 'pending_open'
             active_issue_thread.save()