Help with 'The message has no valid senders'
We recently installed Mailman 3 to replace an existing Mailman 2 installation with a large number of lists and users. I'm now seeing a number of users on specific lists whose posts result in:
May 18 14:25:41 2021 (112570) DISCARD: BY5PR09MB52987327DE1AA2C199DC4DC1D42C9@BY5PR09MB5298.example.org; ['The message has no valid senders']
The post have sender addresses, which are members or owners of the lists, and as far as I can tell, the users are valid. Can anyone shed any light on why a post wouldn't have a valid sender?
Tommy M. McGuire Tommy.M.McGuire@nasa.gov
On 5/18/21 4:14 PM, McGuire, Tommy M. (MSFC-IS90)[EAST2] via Mailman-Users wrote:
We recently installed Mailman 3 to replace an existing Mailman 2 installation with a large number of lists and users. I'm now seeing a number of users on specific lists whose posts result in:
May 18 14:25:41 2021 (112570) DISCARD: BY5PR09MB52987327DE1AA2C199DC4DC1D42C9@BY5PR09MB5298.example.org; ['The message has no valid senders']
The post have sender addresses, which are members or owners of the lists, and as far as I can tell, the users are valid. Can anyone shed any light on why a post wouldn't have a valid sender?
This discard is saying that there was no syntactically valid email
address found in any of the places it looks. These are defined by the
mailman setting sender_headers, the default for which is from from_ reply-to sender which means
- the From: header
- the unix from or envelope sender
- the Reply-To: header
- the Sender: header
Have you set
[mailman]
sender_headers: ...
in mailman.cfg?, and if so, to what?
It turns out that there were two bugs involved: https://gitlab.com/mailman/mailman/-/issues/903 and https://gitlab.com/mailman/mailman/-/issues/904, both now fixed for the next release of Mailman 3.
participants (2)
-
Mark Sapiro -
McGuire, Tommy M. (MSFC-IS90)[EAST2]