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-rw-r--r--Mailman/Bouncers/DSN.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/Mailman/Bouncers/DSN.py b/Mailman/Bouncers/DSN.py
index 701617db..b316c696 100644
--- a/Mailman/Bouncers/DSN.py
+++ b/Mailman/Bouncers/DSN.py
@@ -56,7 +56,8 @@ def check(msg):
# Some MTAs have been observed that put comments on the action.
if action.startswith('delayed'):
return Stop
- if not action.startswith('fail'):
+ # opensmtpd uses non-compliant Action: error.
+ if not (action.startswith('fail') or action.startswith('error')):
# Some non-permanent failure, so ignore this block
continue
params = []