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-rw-r--r--Mailman/Deliverer.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/Mailman/Deliverer.py b/Mailman/Deliverer.py
index b2229d2f5..74a701c61 100644
--- a/Mailman/Deliverer.py
+++ b/Mailman/Deliverer.py
@@ -149,8 +149,9 @@ class Deliverer:
if self.reply_goes_to_list:
del msg['reply-to']
msg.headers.append('Reply-To: %s\n' % self.GetListEmail())
- # get rid of duplicate Sender: fields.
+ # get rid of duplicate fields
del msg['sender']
+ del msg['errors-to']
msg.headers.append('Sender: %s\n' % self.GetAdminEmail())
msg.headers.append('Errors-To: %s\n' % self.GetAdminEmail())
self.AddNonStandardHeaders(msg.headers)