Spamsieve score7/6/2023 Of the spam messages 25 were correctly tagged as spam by SpamAssassin.38% of all email received by the client was spam.An additional 102 messages were received by the client during the same period, bringing the total count to 164 messages ( spam and ham) in all.62 spam messages made it through to my email client (two accounts: one business and one personal).The following results are from a test period of 24 hours in mid-July 2006: DNS-based blacklisting is the numerically most important countermeasure, stopping the largest number of messages, and this means that subsequent levels have to defend against fewer spam messages. So as messages pass through the various lines of defense, the number of spam messages getting through to subsequent levels is successively reduced. Automatically deleting high-scoring spam (message immediately deleted before arriving at mailbox).Virus filtering (message immediately deleted before arriving at mailbox).Address migration ("User unknown" returned to spammer).Blocking non-local senders for local-only recipients (delivery aborted with 5.7.1/551 reply code).DNS-based blacklisting (connections rejected with 554 reply code).The order in which the techniques were deployed to the server is:īut the order in which the techniques are actually applied to incoming messages is: As such, the number of messages stopped per day for the other countermeasures is reduced but that does not mean that their efficacy has diminished. For example, DNS-based blacklisting was the last countermeasure to be introduced in the above list, and it blocks spam before it gets to any of the other countermeasures. It is difficult to estimate the number of spam messages that is collectively being blocked by these countermeasures because they operate at different levels and were introduced incrementally. Virus filtering: 47 messsages (see ClamAV log sample).Blocking non-local senders for local-only recipients: 178 messages.Automatically deleting high-scoring spam: 47 messages.They are not necessarily statistically valid samples, based on a very small data set collected during June and July of 2006, but they do provide some indication of the amount of spam which is being beaten at the server and never makes it through to the client. ![]() The following results show the number of messages blocked (rejected or discarded) at the mail server level in a typical 24 hour period due to the anti-spam technologies and techniques linked to from this page. Address secrecy (see also Using temporary email aliases to do spam monitoring and damage control)Įfficacy Efficacy of server-side spam blocking.Client-side spam-filtering with SpamSieve.Blocking non-local senders for local-only recipients.Automatically deleting high-scoring spam.Server-side spam-filtering with SpamAssassin more specifically:.Sieve_spamtest_status_header = X-Spam-Score: score=(-?] \.]).* Sieve_plugins = sieve_imapsieve sieve_extprograms Sieve_pipe_bin_dir = /usr/lib/dovecot/sieve Sieve_execute_bin_dir = /usr/lib/dovecot/sieve Sieve = file:~/sieve active=~/.dovecot.sieve Imapsieve_mailbox4_before = file:/usr/lib/dovecot/sieve/learn-ham.sieve Imapsieve_mailbox3_before = file:/usr/lib/dovecot/sieve/learn-ham.sieve Imapsieve_mailbox2_before = file:/usr/lib/dovecot/sieve/learn-spam.sieve Location = mdbox:/var/mail/%u/Mail:MAILBOXDIR=expungedĪntispam_pipe_program = /usr/bin/sa-learn-pipe.shĪntispam_pipe_program_notspam_arg = -hamĪntispam_trash_pattern_ignorecase = trash Deleted *įts_lucene = file:/usr/lib/dovecot/sieve/learn-spam.sieve Location = mbox:~/archive:INDEX=~/archive-indexes ![]() Managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext imapsieve Mail_plugins = " zlib fts fts_lucene stats fts fts_lucene stats" 8 session=% method=%m rip=%r lip=%l mpid=%e %c %k > Can you show doveconf -n and your sieve scripts? > into spamassassin is 0755, so it *should* work, shouldn't it? Is there > My sieve files are chmod'ed 0644 and the shell script used to pipe > and my script does not run when I move files between folders. > imapsieve: mailbox INBOX: Failed to read /shared/imapsieve/script > Aug 22 09:30:45 remy dovecot: imap( darac at ): Error: > whenever I change mailboxes I get the following message logged: > I've been trying to set up the Sieve Antispam system as detailed at > Hopefully this is something fairly simple. Next message: imapsieve: failed to read mailbox attribute.Previous message: imapsieve: failed to read mailbox attribute.Imapsieve: failed to read mailbox attribute Darac Marjal mailinglist at ![]() Imapsieve: failed to read mailbox attribute
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