dovecot + rspamd：学习 ham 和 spam

Question

我已经安装了我自己的邮件服务器。它使用 postfix、dovecot 和 rspamd。除了学习无害邮件和垃圾邮件外，电子邮件的传递已经非常顺利。

我发现以下内容指示在 dovecot 文档中。那里有一个 shell 脚本，由 sievelearn-ham.sh调用learn-spam.sh，其中包含用于根据所使用的垃圾邮件服务（例如 rspamd）学习电子邮件的相应命令。

我已经修改了脚本，以便将简单的行也记录在文件中，这样我就知道它已被执行。我注意到该脚本从未被调用过。

/usr/bin/learn-ham.sh：

#!/bin/sh

set -e

LOG_FILE="/var/log/dovecot/$(basename ${0}).log"

function logInfo() {
  TIMESTAMP=$(date '+%Y-%m-%d_%H:%M:%S' )
  echo "${TIMESTAMP}: INFO: ${1}"
  echo "${TIMESTAMP}: INFO: ${1}" >> "${LOG_FILE}"
}

logInfo "Start learning ham"

exec /usr/bin/rspamc --connect "localhost:11333" --password "[masked]" learn_ham

logInfo "Finished learning ham"

我已经debug_log向筛选脚本添加了消息。要查明至少两个筛选脚本是否已执行。我在文件中找不到相应的日志行debug.log。

/var/vmail/sieve/global/report-ham.sieve：

# Documentation:
# https://doc.dovecot.org/configuration_manual/howto/antispam_with_sieve/#replacing-antispam-plugin-with-imapsieve

require ["vnd.dovecot.debug", "vnd.dovecot.pipe", "copy", "imapsieve", "environment", "variables"];

debug_log "Start sieve script for learning ham.";

if environment :matches "imap.mailbox" "*" {
  set "mailbox" "${1}";
}

if string "${mailbox}" "Trash" {
  stop;
}

if string "${mailbox}" "INBOX/Trash" {
  stop;
}

if environment :matches "imap.user" "*" {
  set "username" "${1}";
}

debug_log "Execute learn-ham.sh";

pipe :copy "learn-ham.sh" [ "${username}" ];

该指令表示筛选扩展sieve-pipe只能由 指定目录内的程序调用sieve_pipe_bin_dir。

Sieve 只允许您运行 sieve_pipe_bin_dir 下的脚本。您不能使用 /usr/local/bin/my-sieve-filter.sh，而必须将脚本放在 sieve_pipe_bin_dir 下并使用 my-sieve-filter.sh。

但是，由于sieve_pipe_bin_dir定义了包含程序的目录sieve-pipe，它应该指向/usr/bin，因为sieve-filter也存在于那里。

但是Arch Linux 上没有二进制文件sieve-pipe。也不可用。 现在我问自己，这个程序是从哪里来的？ 我在使用 的官方软件包中找不到或。/usr/binsieve-executesieve-pipesieve-executepacman --query --list | grep --perl-regexp '/usr/bin/sieve-(pipe|execute)'

文档中命名了一个 unix 套接字。Unix 套接字当然可以稍后创建。这是否仍需定义 - 如果需要，如何定义或在哪里定义？

  # The directory where the program sockets are located for the
  # vnd.dovecot.pipe, vnd.dovecot.filter and vnd.dovecot.execute extension
  # respectively. The name of each unix socket contained in that directory
  # directly maps to a program-name referenced from the Sieve script.
  #sieve_pipe_socket_dir = sieve-pipe
  #sieve_filter_socket_dir = sieve-filter
  #sieve_execute_socket_dir = sieve-execute

  # The directory where the scripts are located for direct execution by the
  # vnd.dovecot.pipe, vnd.dovecot.filter and vnd.dovecot.execute extension
  # respectively. The name of each script contained in that directory
  # directly maps to a program-name referenced from the Sieve script.
  #sieve_pipe_bin_dir = /usr/lib/dovecot/sieve-pipe
  #sieve_filter_bin_dir = /usr/lib/dovecot/sieve-filter
  #sieve_execute_bin_dir = /usr/lib/dovecot/sieve-execute

  sieve_pipe_bin_dir = /usr/bin
  sieve_filter_bin_dir = /usr/bin
  sieve_execute_bin_dir = /usr/bin
}

dovecot插件配置：

plugin {
  imapsieve_mailbox1_before = file:/var/vmail/sieve/global/report-spam.sieve
  imapsieve_mailbox1_causes = COPY
  imapsieve_mailbox1_name = Junk
  imapsieve_mailbox2_before = file:/var/vmail/sieve/global/report-ham.sieve
  imapsieve_mailbox2_causes = COPY
  imapsieve_mailbox2_from = Junk
  imapsieve_mailbox2_name = *
  sieve = file:~/sieve;active=~/.dovecot.sieve
  sieve_before = /var/vmail/sieve/global/main.sieve
  sieve_execute_bin_dir = /usr/bin
  sieve_filter_bin_dir = /usr/bin
  sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment
  sieve_pipe_bin_dir = /usr/bin
  sieve_plugins = sieve_imapsieve sieve_extprograms
}