Package: rspamd
Version: 1.9.4-2~bpo10+1
Severity: important
Tags: upstream

Yesterday, I got a mail from the Listmaster Team because my server
rejected the following debian-user-french mail:

  
https://lists.debian.org/msgid-search/94de34b7-3d83-ba9d-49a4-254bcf3a4...@visionduweb.com

After a quick investigation, I understand that was because of bayesian
filters. If you think it's not possible with default configuration,
I can provide more information and you can stop reading here.

Else, I am horrified by such behaviour from rspamd. I consider that a mail
shall only be rejected if it is indubitably spam (e.g. SPF test failure).
But with Bayesian filters, it's impossible to be absolutely sure and the
only valid option is to accept it.

In fact, I don't expect much from this bug report. I am already quite unhappy
of rspamd for other reasons, mainly because it's too slow at learning ham/spam
(I configured dovecot to trigger that when I move mails from/to the Spam
folder). Configuring rspamd also looks horribly complicated and my only
settings are:

# head local.d/*
==> local.d/rbl.conf <==
enabled = false;

==> local.d/surbl.conf <==
enabled = false;

==> local.d/worker-normal.inc <==
enabled = false;

==> local.d/worker-proxy.inc <==
bind_socket = "localhost:11332";
upstream "local" {
  default = yes;
  self_scan = yes;
}

(no greylisting)

Whitelisting bendel.debian.org should be something doable easily
but I don't know how. 

With this incident, I am now decided to try bogofilter.

I tagged upstream because I doubt that Debian ships with different settings
than upstream about this issue.

-- System Information:
Debian Release: 10.0
  APT prefers proposed-updates
  APT policy: (900, 'proposed-updates'), (900, 'stable'), (500, 
'stable-debug'), (500, 'proposed-updates-debug')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), 
LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages rspamd depends on:
ii  adduser          3.118
ii  ca-certificates  20190110
ii  libc6            2.28-10
ii  libevent-2.1-6   2.1.8-stable-4
ii  libglib2.0-0     2.58.3-2+deb10u1
ii  libicu63         63.1-6
ii  libjs-bootstrap  3.4.1+dfsg-1
ii  libjs-jquery     3.3.1~dfsg-3
ii  libjs-requirejs  2.3.6-1
ii  libluajit-5.1-2  2.1.0~beta3+dfsg-5.1
ii  libmagic1        1:5.35-4
ii  libpcre2-8-0     10.32-5
ii  libsqlite3-0     3.27.2-3
ii  libssl1.1        1.1.1c-1
ii  libunwind8       1.2.1-9
ii  lsb-base         10.2019051400
ii  zlib1g           1:1.2.11.dfsg-1

rspamd recommends no packages.

rspamd suggests no packages.

-- no debconf information

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