Comment 4 for bug 1805137

Thanks for the message. The anonymizing is not a problem. It turns out that this is almost an RFC 3464 compliant DSN and should be recognized by Mailman/Bouncers/DSN.py except for the fact that the 'action' in the Delivery Report is 'error'. This is non-compliant. RFC 3464, sec 2.3.3 defines action as:

      action-value =
            "failed" / "delayed" / "delivered" / "relayed" / "expanded"

Thus, 'Action: error' in this DSN is non-compliant. It should be 'Action: failed'. You may wish to report this to the opensmtpd developers.

If the mean time, if you look at Mailman/Bouncers/DSN.py at line 59, you'll see

            if not action.startswith('fail'):
                # Some non-permanent failure, so ignore this block
                continue

If you change that to

            if not (action.startswith('fail') or action.startswith('error')):
                # Some non-permanent failure, so ignore this block
                continue

this DSN should be recognized by DSN.py. I'll be incorporating this fix for the next release.