Dear Mark,
thank you for your time.
Here are the lists settings and an example mail attached.
Filter content: NO Filter types: EMPTY Pass types: EMPTY Pass extensions: EMPTY Collapse alterantives: YES Convert html to plaintext: NO
Thunderbird is showing the mail "correct". Outlook does show the attachments as attachments.
Thank you.
Stefan
Am Mi., 18. Jan. 2023 um 18:02 Uhr schrieb Mark Sapiro <mark@msapiro.net>:
On 1/17/23 23:45, Stefan Bauer wrote:
Dear Users & Developers,
we're running MM3 on Ubuntu 22 and used the venv-installation method. Last week we updated via¹ to
Mailman Core-Version GNU Mailman 3.3.8 (Tom Sawyer) Mailman Core API-Version 3.1 Mailman Core Python-Version 3.10.6 (main, Nov 14 2022, 16:10:14) [GCC 11.3.0]
and now mailman attaches mime-attachments to email as text-files. That breaks many mails in our environment.
For example: Now we have attachments like
smime.p7s + ATT000001.txt as well as what looks like MM footers "mailing list --- test@domain ... To unsubscripbe send an email to ..."
How can we get the "old" processing back?
I doubt this has anything to do with the upgrade per se. It has to do with MIME multipart (in this case, signed) messages and how MM headers/footers are added. The MM 2.1 FAQ article at <https://wiki.list.org/x/4030707> has some info on this.
In order to say more, I would need to see the list's settings for Filter types, Filter extensions, Pass types, Pass extensions, Collapse alternatives and Convert html to plaintext and the complete MIME structure of the incoming message.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
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Mailman's content filtering has removed the following MIME parts from this message.
Replaced multipart/alternative part with first alternative.