Our regex for splitting HTTP path into SCRIPT_NAME and PATH_INFO was incorrect when webLocation was set to "/". Since Sympa 6.2.56 this has caused the web interface to return "421 Misdirected Request". Since 6.2.56 Sympa can do the splitting on its own so we can simply remove it from nginx configuration. See also: - https://github.com/sympa-community/sympa/issues/879 - https://github.com/sympa-community/sympa/pull/910 - https://github.com/sympa-community/sympa-community.github.io/pull/53
Because ProtectKernelModules implies NoNewPrivileges, postfix's sendmail executable, which is setgid, wasn't able to send mail.
Update module accordingly.