Hi Markus, > For the record I have just found the solution to this issue. > Apparently multipart/signed messages were discarded. Mailman vette logs confirm it: Sep 15 11:51:07 2018 (579) Message discarded, msgid: <20180915104558.oqwfg2dpo7xiw4dv@reiner-h.de>' list: Pkg-games-devel, handler: MimeDel Sep 15 19:45:09 2018 (579) Message discarded, msgid: <cf70f7f1-1d01-1162-0219-461221305cfc@debian.org>' list: Pkg-games-devel, handler: MimeDel > I can't remember that I have ever touched the content filtering > section but pass_mime_types must be set to the following values > to allow GPG signed messages. Thanks, I found a mix of values for signed messages in lists that have MIME filtering on. You may want to consider adding also «application/pgp-signature». Cheers, Alex -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Alex Muntada <alexm@debian.org> ⢿⡄⠘⠷⠚⠋ Debian Developer - log.alexm.org ⠈⠳⣄⠀⠀⠀⠀
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