Hello Yann,Thank you for this report. I will see if a 3.4-2 version could be uploaded in Bookworm despite the hard work on the Trixie release.
Note that you can locally disable it by adding the following to `/etc/rspamd/local.d/surbl.conf`:
rbls { nixspam { enabled = false; } } Finally, it has been removed in 3.11.1[1] - which is now part of Trixie. Jérôme[1] https://github.com/rspamd/rspamd/commit/1bfa26296e65514c00e18f856ef3297e7fefdd1c