On 9/19/2012 7:17 PM, Ben Johnson wrote: > > > On 9/19/2012 6:19 PM, Tom Hendrikx wrote: >> On 19/09/12 23:41, Ben Johnson wrote: >>> >>> >>> On 9/11/2012 10:40 AM, Ben Johnson wrote: >>>> You nailed it, Ben. Thanks! >>>> >>>> I downloaded/installed the dovecot-dev package from the same maintainer >>>> and was able to build Antispam without issue. >>>> >>>> The hang-up now seems to be with my configuration. >>>> >>>> I'm seeing the following error in my email client whenever I attempt to >>>> move an email message from, say, Inbox to Junk folder: >>>> >>>> [SERVERBUG] BUG Unknown internal error. >>>> >>>> Nothing at all appears in syslog when this happens. >>>> >>>> I followed the instructions at http://wiki2.dovecot.org/Plugins/Antispam >>>> , to the letter, I believe. >>>> >>>> The relevant portions of my configuration are as follows: >>>> >>>> --------------------- >>>> protocol imap { >>>> mail_plugins = quota imap_quota antispam >>>> } >>>> >>>> plugin { >>>> quota = dict:user::file:/var/vmail/%d/%n/.quotausage >>>> sieve = /var/vmail/%d/%n/.sieve >>>> >>>> antispam_backend = MAILTRAIN >>>> antispam_mail_sendmail = /usr/bin/sa-learn-pipe.sh >>>> antispam_mail_spam = --spam >>>> antispam_mail_notspam = --ham >>>> antispam_spam_pattern_ignorecase = spam;junk >>>> } >>>> --------------------- >>>> >>>> The permissions and execute bit are set in accordance with other >>>> executables in the same directory: >>>> >>>> # ls -lah /usr/bin/ | grep -i "sa-learn-pipe.sh" >>>> -rwxr-xr-x 1 root root 297 Sep 5 11:17 sa-learn-pipe.sh >>>> >>>> I would provide more log content, but the debug options seem to be gone >>>> in the forked, >= 2.0 version of this plug-in. >>>> >>>> Any ideas are very much appreciated. >>>> >>>> Thanks, >>>> >>>> -Ben >>> >>> Given that nobody shared any insight here, I decided to stand-up a >>> completely new VM with Ubuntu 12.04 LTS and see if the same error occurs. >>> >>> While the error is different this time around, I am still unable to get >>> any variant of the dovecot-antispam plug-in working. >>> >>> When I attempt to use the current packages from Ubuntu 12.04.1 LTS, and >>> I use the above configuration, my syslog fills-up with the following: >>> >>> dovecot: imap-login: Login: user=<u...@example.com>, method=PLAIN, >>> rip=10.0.1.57, lip=10.0.1.8, mpid=2879, TLS >>> dovecot: master: Error: service(imap): child 2879 returned error 3 >>> >>> Surprisingly, I can find only two other mentions of "error 3" anywhere >>> on the Internet. Those mentions were from another user to this mailing list: >>> >>> http://www.dovecot.org/list/dovecot/2012-August/067787.html >>> http://www.dovecot.org/list/dovecot/2012-August/067814.html >>> >>> The lack of "error 3" ubiquity leads me to believe that I must be doing >>> something stupid. >>> >>> There's no question that this behavior is related to the >>> antispam-plugin, because when I commented-out the relevant lines in >>> Dovecot's configuration file, the error does not occur. >>> >>> I have followed the instructions at >>> http://wiki2.dovecot.org/Plugins/Antispam to the letter, and this is the >>> result. >>> >>> The only instance in which I diverged from the Wiki article is that I >>> used the Ubuntu-provided dovecot-antispam package (instead of compiling >>> the plug-in from source). >>> >>> I am trying to use the "mailtrain" back-end, per the above-cited Wiki >>> article, to call SpamAssassin's "sa-learn" utility for real-time learning. >>> >>> I am not using the SpamAssassin daemon (spamd). >>> >>> I'm about to throw in the towel on this plug-in, so any help would be >>> greatly appreciated. >>> >>> Thank you, >>> >>> -Ben >> >> There are 2 versions of the dovecot-antispam package. The original >> version was created by Johannes Berg, then died almost a silent death, >> and was forked by Eugene Paskevitch. Later Johannes revived his original >> version somewhat. >> >> The ubuntu package is based on the 'revived Johannes fork' [1], while >> the documentation on the dovecot wiki describes the 'Eugene fork'. [2] >> >> [1] https://launchpad.net/ubuntu/precise/+source/dovecot-antispam/+copyright >> [2] http://wiki2.dovecot.org/Plugins/Antispam >> >> Thus you'll need to choose which plugin you want, then follow the >> complete procedure for that plugin only. They both can do what you want, >> but building and configuration are slightly different. >> >> It would be nice if Johannes and Eugene would either agree on a single >> version of the plugin, or rename one of the forks so they don't get >> mixed up that easily. I'm not sure if that has been discussed (on- or >> off-list) in the past. >> >> FWIW: I used the 'original Johannes fork' with dovecot 1.x, and the >> 'Eugene fork' with 2.0.x, both with delight. Didn't get myself to >> upgrade to 2.1 yet, so no experience there. >> >> -- >> Tom >> > > Thank you for your timely response, Tom. Much appreciated. > > Your remarks clear-up a lot of the confusion for me. I didn't realize > that the "revived Johannes fork" made a comeback for Dovecot 2. Nor did > I realize that this is the version that is packaged with Ubuntu 12.04. > > Given that I'm more-or-less forced to work with Ubuntu LTS, I would > prefer to use the OS's package management system wherever possible. I > suppose, by extension, that I would prefer to use the "revived Johannes > fork". > > I've tried the Johannes versions (for both Dovecot 1 and Dovecot 2), but > am unable to get either to work the way I want (mailtrain back-end with > real-time calls to sa-learn, as described in the Dovecot 2/Eugene Wiki > article). Shouldn't the basic tenets of each version of the plug-in apply? > > Where should I start, in the way of seeking support? Basically, I intend > to use the Johannes version, but I want to configure it in the manner > described in the Eugene version Wiki article. > > I've already described (rather exhaustively) what happens when I attempt > to use the Johannes version and adapt the Eugene version instructions. > > I'm curious to know what method you've used over the years with such > glowing success. Which back-end did you use with Dovecot 1/Johannes? How > about with Dovecot 2/Eugene? > > Thanks again, > > -Ben >
Thanks again, Tom. After you set me straight on the various versions of the plug-in, I was able to synthesize the relevant documentation and make it all work on Ubuntu 12.04 LTS with Dovecot 2. The key was to understand the following: 1.) The Ubuntu repositories use the Johannes versions of the plug-in (for both Dovecot 1 and 2). Ubuntu 10.04 LTS (Dovecot 1) http://manpages.ubuntu.com/manpages/lucid/man7/dovecot-antispam.7.html Ubuntu 12.04 LTS (Dovecot 2) http://manpages.ubuntu.com/manpages/precise/man7/dovecot-antispam.7.html 2.) The Dovecot 2 Wiki instructions for the Antispam plug-in refer to the Eugene version, and that version's configuration directives differ from the Johannes version 2 directives. So, anyone attempting to follow the Wiki article on Ubuntu will need to adapt the directives accordingly (see documentation links above for equivalent directive names). 3.) The sample "/usr/bin/sa-learn-pipe.sh" script in the Dovecot 2 Wiki instructions lacks a shebang; until a proper shebang is added to the shell script, script execution will fail with "status 1". I added the standard shebang: #!/bin/sh Here are the configuration directives that work for me: plugin { antispam_debug_target = syslog antispam_backend = pipe antispam_signature = X-DSPAM-Signature antispam_signature_missing = error antispam_spam_pattern_ignorecase = SPAM;JUNK antispam_pipe_tmpdir = /tmp antispam_pipe_program = /usr/bin/sa-learn-pipe.sh antispam_pipe_program_spam_arg = --spam antispam_pipe_program_notspam_arg = --ham } My final goal is to get the version 1 plug-in working with Dovecot 1.2.9. I'm using the following directives, but when I move mail from Inbox to Junk, for example, I see no evidence that antispam is taking action. plugin { antispam_signature = X-DSPAM-Signature antispam_signature_missing = error antispam_spam_pattern_ignorecase = SPAM;JUNK antispam_mail_tmpdir = /tmp antispam_mail_sendmail = /usr/bin/sa-learn-pipe.sh antispam_mail_spam = --spam antispam_mail_notspam = --ham } Dovecot writes nothing at all to syslog. No errors, no reference to antispam. And the message is moved successfully (no failure/error notice in IMAP client). The back-end script, "/usr/bin/sa-learn-pipe.sh", attempts to create a log file in /tmp, which works with Antispam 2. But no such luck here; nothing is ever written to /tmp. Version 2 of the plug-in includes a verbose debugging mode, but it seems that no such feature is present in version 1. I noticed also that version 1 seems not to require a back-end to be specified explicitly (as in version 2). Is the back-end implied via the configuration directives that are present? Respectfully, -Ben
