On 10/19/23 13:41, Mark Sapiro wrote:

On 10/19/23 10:02, Thomas Ward via Mailman-users wrote:

...

I noticed some unusual behavior in Mailman3 stable release on PyPI and such.  Namely, there are instances where replies are being processed and the prefix tags are simply being **lost** and dropped by Mailman3, instead of being properly prepended where they're supposed to go.

Is this a known bug or does it need its own bug in the gitlab tracker?

Are you sure you are looking at messages from the list and not messages received by direct To:, CC: or BCC:?

I have never seen an issue where list posts would sometimes have the subject prefix prepended and sometimes not. If you are seeing this, we would ideally like to see a thread in the hyperkitty archive where some of the messages have the prefix in the message view and some don't, or at least see some of the raw Subject: headers.

This might be a MUA quirk because we (read: my employer, like my other messages) are using Outlook which we all know does Weirdness.

Upon examination of the actual message's source it has the proper subject line with a prefix:

Subject: [Test] Emailing Test

But the way this is displayed in Outlook is weird.  It may be that Microsoft is seeing the message as CC'd (reply-all was used!) and then stripping prefix, etc. because it realized there was some stupidness or such at the message-id level or something.

This is looking more like a MUA issue because my other address which is subscribed and uses Thunderbird to access the mailbox instead sees the headers right with the proper prefix, suggesting this is something specific to Outlook as a MUA.

Thomas