使用筛选脚本的 Dovecot 示例:

使用筛选脚本的 Dovecot 示例:

我怎样才能在 SpamAssassin 中添加几个自定义的“坏”词,以便将包含这些词的电子邮件标记为垃圾邮件?

更新

其中一个关键是编辑文件 /etc/mail/spamassassin,并添加坏词过滤器,如

http://linuxguruz.wordpress.com/2008/09/16/spamassassin-example/

但是,在这种情况下,邮件仅被标记为垃圾邮件,它仍然会进入我的收件箱......

我该怎么做才能完全不收到包含脏话的电子邮件?

更新2

如果电子邮件被归类为垃圾邮件,我的 SpamAssassin 会更改主题,现在它工作正常。文件 /etc/mail/spamassassin/local.cf 如下所示:

ok_locales all
skip_rbl_checks 0

required_score 5
report_safe 1
rewrite_header Subject ***SPAM***

use_pyzor 1
use_razor2 1

use_auto_whitelist 0


use_bayes 1
use_bayes_rules 1
bayes_auto_learn 1
blacklist_from *@kupiizaradi.cjb.net
blacklist_from *@hallmark.com
whitelist_from *@*hrgworldwide.com
whitelist_from *@bluehost.com
#blacklist_from *@greekajob.com

header CONTAINS_VIG Subject =~ /viagra, Cialix Pills, sex, xxx, penis, pussy, greekajob, greekajobs, pera
zdera/
body CONTAINS_PEN /viagra, sex, xxx, penis, puss, greekajob, greekajobs, perazdera/
score CONTAINS_VIG 1.5
score CONTAINS_PEN 1.5
describe CONTAINS_VIG Bad Word
describe CONTAINS_PEN Bad Word

因此,现在我需要帮助:

  1. 将这些电子邮件移至垃圾邮件文件夹
  2. 自动为服务器上添加的每个新邮件帐户创建垃圾邮件文件夹

文件 /etc/mail/mailfilter 如下所示:

SHELL="/bin/sh"
import EXT
import HOST
VHOME=`pwd`
TIMESTAMP=`date "+%b %d %H:%M:%S"`
#VERBOSE=9

logfile "/var/log/maildrop/maildrop.log"
log "$TIMESTAMP - BEGIN maildrop processing for $EXT@$HOST ==="

`test -r $VHOME/.mailfilter`
if($RETURNCODE == 0)
{
    log "including $VHOME/.mailfilter"
    exception {
        include $VHOME/.mailfilter
    }
}


# does maildirsize exist?
`test -e $VHOME/Maildir/maildirsize`

# if maildirsize doesn't exist
if($RETURNCODE == 1)
{ 

    # does vuserinfo exist?
    `test -x /home/vpopmail/bin/vuserinfo` 

    # if vuserinfo exists
    if($RETURNCODE == 0)
    { 
        # does the user exist?
        `/home/vpopmail/bin/vuserinfo $EXT@$HOST`
        if($RETURNCODE == 0)
        {

            # find out what the user's quota is
            $QUOTA=`/home/vpopmail/bin/vuserinfo -Q $EXT@$HOST`
            log "QUOTA = $QUOTA"

            # does maildirmake exists?
            `test -x /usr/bin/maildirmake`

            # if maildirmake exists
            if($RETURNCODE == 0)
            {

                # does Maildir exist?
                `test -d $VHOME/Maildir`

                # if Maildir exists
                if($RETURNCODE == 0)
                {

                    # make the maildirsize file
                    `/usr/bin/maildirmake -q $QUOTA $VHOME/Maildir`
                    `test -s "$VHOME/Maildir/maildirsize"`

                    # if maildirsize exists
                    if($RETURNCODE == 0)
                    {
                        `/bin/chown vpopmail:vchkpw $VHOME/Maildir/maildirsize`
                        `/bin/chmod 640 $VHOME/Maildir/maildirsize`

                    # else 
                    }
                    else
                    {
                        log "Problem making 'maildirsize' for $VHOME"
                    }

                    # end if maildirsize exists
                }
                else
                {
                    log "Maildir does not exist for $VHOME"
                }

                # end if Maildir exists
            }
            else
            {
                log "maildirmake does not exist"

            # end if maildirmake exists
            }
        }
        else
        {
            log "user $EXT@HOST does not exist"

        # end if user exists
        }
    }
    else
    {
        log "vuserinfo does not exist"

    # end if vuserinfo exists
    }
}
# does maildirsize exist?
`test -e $VHOME/Maildir/maildirsize`
if($RETURNCODE == 0)
{
    MAILDIRQUOTA=`/usr/bin/head -n1 $VHOME/Maildir/maildirsize`
    log "MAILDIRQUOTA = $MAILDIRQUOTA"
}


#--------------------------------------------------------
# Filter spam - scores >= SPAMLIMIT is not delivered
#
# If you DO NOT want to send mail that is over the spam limit
# to spamassassin autolearn, comment: 'cc "|sa-learn -spam"'
#--------------------------------------------------------

##########################################################################
# Below is where I found some of the main problem, i.e apparently the
# regex logic changed, do a diff against this one and the old one,
# the old one was delimited with the '!' (bang) and grouped as a whole.
# it failed the match always.  By using standard regex grouping, I was able
# to get the filter working. By grouping the score accordingly, it
# breaks it into a number and precision, e.g. MATCH1 and MATCH2
##########################################################################

if(/^X-Spam-Status: Yes, score=([0-9]+)\.([0-9]+)/:h)
{
    if($MATCH1 >= 5)
    {
        cc "|sa-learn --spam"
    }

    # if the user doesnt' have a Spam folder
    `test -d $VHOME/Maildir/.Spam`
    if($RETURNCODE == 1)
    {
        `test -x /usr/bin/maildirmake`
        if($RETURNCODE == 0)
        {
            `/usr/bin/maildirmake -f Spam $VHOME/Maildir`
            `test -x /usr/bin/subscribeIMAP.sh`
            if($RETURNCODE == 0)
            {
                `/usr/bin/subscribeIMAP.sh Spam $VHOME`
            }
        }
    }

    # make sure the deliverquota binary exists and is executable
    `test -x /usr/bin/deliverquota`
    if($RETURNCODE == 1)
    {
        exception {
            to "$VHOME/Maildir/.Spam"
        }
    }
    else
    {
        cc "|/usr/bin/deliverquota -w 90 $VHOME/Maildir/.Spam"
        if($RETURNCODE == 0)
        {
            log "=== END ===  $EXT@$HOST  success (quota)"
            EXITCODE=0
            exit
        }
        else
        {
            if($RETURNCODE == 77)
            {
                log "$TIMESTAMP - $EXT@$HOST  bounced (quota)"
                to "|/var/qmail/bin/bouncesaying '$EXT@$HOST is over quota'"
            }
            else
            {
                log \
                 "$TIMESTAMP - $EXT@$HOST failure (unknown deliverquota error)"
                to "$VHOME/Maildir/.Spam"
            }
        }
    }
}

##########################################################################
# Same as above
##########################################################################
if(/^X-Spam-Status: No, score=([\-]*[0-9]+)\.([0-9]+) /:h)
{
    log "   message is clean ($MATCH1.$MATCH2)"
}


#--------------------------------------------------------
# Include any user rules 
#--------------------------------------------------------

`test -r $VHOME/Maildir/.mailfilter`
if($RETURNCODE == 0)
{
    log "   including $VHOME/Maildir/.mailfilter"
    exception {
        include $VHOME/Maildir/.mailfilter
    }
}

`test -x /usr/bin/deliverquota`
if ($RETURNCODE == 1)
{
    log "$TIMESTAMP - $EXT@$HOST WARNING: no deliverquota!"
    log "=== END ===  $EXT@$HOST success"
    exception {
        to "$VHOME/Maildir"
    }
}
else
{
    exception {
        log "RETCODE = $RETURNCODE   delivering to $VHOME/Maildir"
        xfilter "/usr/bin/deliverquota -w 90 $VHOME/Maildir"
    }
    #--------------------------------------------------------
    # check to make sure the message was delivered
    # returncode 77 means that out maildir was overquota - bounce mail
    #--------------------------------------------------------
    if($RETURNCODE == 77)
    {
        log "$TIMESTAMP - BOUNCED: bouncesaying '$EXT@$HOST is over quota'"
        log "$TIMESTAMP - $EXT@$HOST  bounced"
        to "|/var/qmail/bin/bouncesaying '$EXT@$HOST is over quota'"
    }
    else
    {
        log "=== END ===  $EXT@$HOST  success (quota)"
        EXITCODE=0
        exit
    }
}

log "$TIMESTAMP - $EXT@$HOST - WARNING: This message should never be printed!"
[root@um-1027 /etc/mail]#

.qmail-default 如下所示:

|/var/qmail/bin/preline /usr/bin/maildrop /etc/mail/mailfilter

您能帮我修复这个问题并将垃圾邮件移到垃圾邮件文件夹中吗?

答案1

在 SpamAssassin 中,您可以创建规则,在触发后将 N 分数附加到垃圾邮件分类标头。

您可以自行设置将其归类为垃圾邮件的阈值,以及如何处理它(删除、移至文件夹、转发?等等)。

如果您想将可疑垃圾邮件移动到特定文件夹,我建议您将其挂接到您的 POP3/IMAP 服务器(例如:dovecot)或 POP3/IMAP 客户端使用(例如:fetchmail + procmail)。

使用筛选脚本的 Dovecot 示例:

if header :contains "X-Spam-Level" "**********" { discard; stop; }

参考:https://wiki2.dovecot.org/Pigeonhole/Sieve/Examples#Direct_filtering_using_message_header

Procmail 规则将垃圾邮件过滤到 SPAM 文件夹 (~/.procmailrc)

:0: * ^X-Spam-Status: Yes SPAM

参考:https://www.cs.rutgers.edu/~watrous/procmail-spam.html

我希望这会有所帮助。

答案2

使用 SpamAssassin,您只能重写被检测为垃圾邮件的邮件,但不能删除它。Postfix 或 cpanel 使用 SpamAssassin 来检测垃圾邮件,而不是处理垃圾邮件。但您可以在 cpanel 中创建规则(例如)以删除标题由 SpamAssassin 重写的电子邮件。在我看来,这是一个坏主意,您可能会错过误报。只需将其放在具有基本规则的特定文件夹中即可。

答案3

移动邮件与 Spamassassin 无关,完全取决于您的 LDA 或 MUA(本地投递代理或邮件用户代理)。您的邮件是投递到 POP3 帐户还是 IMAP 帐户?您的服务器使用的是 Dovecot 还是 Cyrus 还是其他?

问题和变数太多,这里不是回答这些问题的地方。

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