[Mailman] Delivery report

[postmaster at mail0.sysco.com]

Hello, this is the mail server on mail0.sysco.com.

I am sending you this message to inform you on the delivery status of a
message you previously sent.  Immediately below you will find a list of
the affected recipients;  also attached is a Delivery Status Notification
(DSN) report in standard format, as well as the headers of the original
message.

  <mailman at openstreetmap.org>  delivery failed; will not continue trying
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/rfc822-headers
Size: 353 bytes
Desc: not available
URL: <http://lists.openstreetmap.org/pipermail/mailman/attachments/20210901/3803c5cf/attachment.bin>