September 2012 - dovecot

[Dovecot] LTMP Proxy fails when backend server connection refused
by Jack Bates 02 Oct '12

02 Oct '12

Version: 2.1.9 Connecting directly to the proxy server on the LMTP port, issue lhlo, mail from, rcpt to, data. After the . closing of data, it just hangs there. The logs on the proxy server show: Sep 27 19:55:12 proxy1 dovecot: lmtp(9398): Connect from 69.8.2.71 Sep 27 19:55:24 proxy1 dovecot: lmtp(9398): Error: lmtp client: connect(lmtp, 7025) failed: Connection refused root 9398 1102 0 19:53 ? 00:00:00 dovecot/lmtp The proxy server is hard coded (not director in this case). I purposefully shut it down to see how the system would handle failures. Unfortunately, it appears that the process just hangs there. For fun, I tried a separate protocol lmtp option in the config to try proxy_timeout. It made no difference. Missing some error handling? protocol lmtp { passdb { driver = static args = proxy=y host=%s nopassword=y proxy_timeout=120 } } Jack

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[Dovecot] Antispam plugin problem (CRM114)
by Davide 02 Oct '12

02 Oct '12

Hi to all, sorry in advance for my poor english, this is the first time that i wrote to a list if i make mistake .... excuseme. My problem is this: i have dovecot 2.1.8 installed and functioning from 2 years one week ago i have installed crm114 for my last spam detection filter "version 20100106-BlameMichelson (TRE 0.8.0 (BSD))" My mail system is qmail that through .qmail default correctly tag with X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-27CA1CFB X-CRM114-CacheID: sfid-20120927_105129_798028_B0035817 X-CRM114-Status: GOOD ( 28.64 ) headers dovecot.conf is as follow: plugin { . . . antispam_signature = X-CRM114-CacheID antispam_verbose_debug = 1 antispam_debug_target = stderr antispam_backend = crm114 antispam_signature_missing = error antispam_trash = Trash antispam_spam = SPAM antispam_unsure = UNSURE antispam_crm_binary = /opt/crm114/mailreaver.crm antispam_crm_args = --fileprefix=/opt/crm114/ . . . } protocol imap { . . . mail_plugin_dir = /usr/local/lib/dovecot mail_plugins = $mail_plugins quota imap_quota mail_log antispam . . . } I have a sieve default compiled script that automatically put mails in SPAM folder or UNSURE folder if respectively in message hedere there is the evaluation of crm114 (UNSURE or SPAM). When i move mails incorrectly tagged by crm (for example from SPAM to my inbox or from UNSURE to SPAM) thunderbird (company official mail client ver 15.01) go in error with the following message: "Operation failed over folder 'UNSURE'. Server for account davide.marchi(a)mail.cgilfe.it said: [CANNOT] Failed to call crm114 binary.." I dont'know where is my mistake if someone can help me is much appreciated Thank you -- */Davide Marchi /Teorema Ferrara Srl /(Tel: /**/+39 0532 783161)/**/ (Fax: +/**/39 0532 783368/**/)/**//**/ /**//**/Davide.Marchi(a)mail.cgilfe.it <mailto:davide.marchi@mail.cgilfe.it?subject=Info> /CONFIDENZIALITA’ *** Questo messaggio, inclusi gli eventuali allegati, è indirizzato solo ai destinatari e può contenere informazioni riservate e confidenziali. Se avete ricevuto il messaggio senza esserne un destinatario, siete pregati di non utilizzare, copiare o distribuire questo messaggio o i suoi allegati. Se avete ricevuto il messaggio per errore, siete pregati di cancellarlo dal vostro sistema, assieme a tutti gli allegati, e di informare immediatamente il mittente,sia ai sensi dell'art. 616 c.p., sia ai sensi del DL n. 196/03. *CONFIDENTIALITY*** This message and any attachments are intended only for the use of the addressee(s) and may contain information that is privileged and/or confidential. If the reader of the message is not the intended recipient(s) or an authorized representative of the intended recipient(s), please do not use, copy, distribute this email or its attachments or take action based on them. If you have received this communication in error, please notify us immediately by email and delete the message and any attachments from your system. *Teorema FerraraSrl - Via Spronello, 7 - 44121 Ferrara Italia - P. IVA 01244490387** P**S**tampa questo messaggio solo se veramente necessario, pensa alla natura! - Please consider whether it is necessary to print this e-mail*

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[Dovecot] Log NAT IP address?
by Charles Marcus 01 Oct '12

01 Oct '12

Hi Timo/everyone, Currently we are logging the remote IP, but is there a way to show the IP address that the NAT connection is coming from? The reason I ask is, we are changing ISPs, and I would like to see in the logs when an external connection is coming from our OLD ISP connection, and when it is coming through our new one. We have a Watchguard firewall, and I have both External connections setup and working, and have just pointed our DNS records to the new public IP, and would like to be able to see which WAN connection/IP they are coming from. Thanks, -- Best regards, Charles

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[Dovecot] Dovecot Authentication through different IMAP server?
by Marc Perkel 28 Sep '12

28 Sep '12

Just wondering - is there any way for a dovecot server to authenticate against a different IMAP server? Here's what I'm thinking. I run a spam filtering service and thinking about a way to give users access to their stored spam on my servers. However real email is forwarded to their server, So I'm wondering if I can configure dovecot somehow to do a back end authentication to their email account to gain access to their spam. Open to suggestions

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[Dovecot] Dovecot Clustering with dsync over ssh
by weber＠zackbummfertig.de 28 Sep '12

28 Sep '12

Hello List, i only found an old post of tiemo where he announced that he will do an wiki article how to setup dovecot cluster with dsync over ssh. anyone knows if this artcile exists and where? i would like to setup a dovecot cluster with 2 machines. thanks for help marko

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[Dovecot] Hanging IMAP sessions on Mac OS X with dovecot 2.1.10 - worked fine with 2.0.15
by Clemens Schrimpe 28 Sep '12

28 Sep '12

Ok, here's a toughie: Out of a whim (and because of the bad weather) I today decided to upgrade my completely functioning 2.0.15 installation on my Mac OS X 10.6.7 system. NB: It's not a Mac OS X "Server", as sold by Apple - I have compiled my dovecots myself for quite a while. Anyhow: At first everything appeared to work fine after the upgrade. Up until I created a new user and -while testing- SELECTed his INBOX. The SELECT was "stuck". Though the process seemed to be alive I could only get rid of it with a "kill -9 <pid>". The same happened when selecting a newly created mailbox on any of the other (otherwise functioning) accounts, so the problem had nothing to do with the new account, but rather with the fact, that it's INBOX was empty. Using dtruss and gdb I found out, that the dovecot process was trying to obtain a GUID and in the course of doing so invoked gethostbyname(), which intern caused a lot of "mach message" handling and somewhere, deep down there, the process was stuck. Well, that led my to believe, that there was something wrong with the -so called- "mach bootstrap context". I usually start dovecot from with a (home-brewn) startup-script, which invokes it (practically) like so: sudo /usr/libexec/StartupItemContext dovecot (again: all this was working fine under 2.0.15) Now with 2.1.10, when I manually invoke dovecot with just sudo dovecot Everything appears to work fine - at least the sessions don't get stuck any more. But as soon as I logout (with dovecot still running in the background) it loses it's "mach bootstrap context" and finds itself unable to perform even the simplest tasks, like mapping a username to a uid, etc. pp. -- so starting it without the "/usr/libexec/StartupItemContext" in the background is out of the question. Now -with all that said- here's my question: What has changed with regards to "processual context" between 2.0.15 and 2.1.10 when the "imap" process is spawned/exec'd? Any environmental cleanups, closing of unknown fds, deletion/modification of environment variables, process-group-handlers, etc.? It appears, that the imap process no longer "inherits" the StartupItemContext from the main process, so some change between 2.0.15 and 2.1.10 must have broken it ... Any help is highly appreciated - Clemens PS: I google'd around a lot and searched the mailing-lists, of course. I only found a post of someone who ran into the same/similar problem dating back to Feb 21st 2012 under the subject "dovecot freezes when trying to get mail from maildir with mail", but it was quickly dismissed without ever getting resolved and that was that. PS2: I intentionally didn't include any configs with this mail as they seem to be irrelevant, but of course I can generate the necessary output if needed.

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[Dovecot] Plugin "lazy_expunge" and subfolder
by Andreas Kossack 28 Sep '12

28 Sep '12

Hi Timo, hi all, we want to use the "lazy_expunge" plugin (from dovecot 2.1.10) and had configured it in a test environemnt like described in "http://wiki2.dovecot.org/Plugins/Lazyexpunge" (1 namespace) There are some subfolders from "INBOX" (like "INBOX/SPAM") in a "maildir++" configuration. All actions on first level directories ".INBOX", ."Sent" or ".Archives" are working as expected. If there is an expunge activity on e.g. ".INBOX.SPAM" directory we get an error message in dovecot log: Sep 26 12:27:55 imap(testuser): Error: lazy_expunge: Couldn't open expunge mailbox: Character not allowed in mailbox name: '.' What can we do or change to make it work? -- Best regards A. Kossack _______________________________________________________________________________ Andreas Kossack Andreas.Kossack(a)TU-Cottbus.De BTU Cottbus, Brandenburg, Germany, Walther-Pauer-Str.2, 03046 Cottbus http://wwwca.telesec.de/cgi-bin/caservice/Common/InstallRoot/DT-Root-CA-2.d… _______________________________________________________________________________

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[Dovecot] sieve vacation
by Bob Miller 27 Sep '12

27 Sep '12

Hello, I set up pigeonhole on a server and am using roundcube's sieverules to create a set of rules. When using the vacation feature, I can see in the logs that dovecot is sending the vacation response, but the recipient never receives it. What method does dovecot use to send the response? Does it use the sendmail binary, does it use the mail command, does it connect to some smtp server somewhere, does it use qmail-inject if it finds it? I find no evidence it is using any of these methods on my server, but I am not sure if one of these methods is failing or if there is some place else I should be looking for the missing vacation response... Thank you for any suggestions... -- Computerisms Bob Miller 867-334-7117 / 867 633 3760 http://computerisms.ca

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[Dovecot] Deleted to trash plugin
by Humberto A. Pedroso 27 Sep '12

27 Sep '12

Hello, Does anybody are using deleted_to_trash plugin with Dovecot 2.1.9? I'm trying to compile and I'm with some difficulties. I tested with dovecot 2.0 and it works very well. -- Humberto

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[Dovecot] with mbox format doveadm ignores subfolders of inbox
by Jürgen Obermann 27 Sep '12

27 Sep '12

Hello. After we switched the format from mbox to mdbox on our dovecot (version 2.1.9) servers last week, some of our users were missing the subfolders of their inboxes. So far we thought that with the mbox format it is not possible to have mail folders containing both messages and subfolders. Now we know that there is one exception from this rule: the inbox. With mbox format dovecot supports subfolders of the inbox, and a few of our users actually detected and used this feature! Internally the messages are stored in /var/mail/user or in a file named 'inbox' and the subfolders are in the directory 'INBOX'. (The OS is case sensitiv.) The problem was that doveadm and dsync do not support subfolders of the inbox and therefore these folders did not get synchronized from our old mbox server to the new mdbox dovecot server. The command doveadm -o mail_location=mbox:~user123/Mail mailbox list -u user123 '*' did not show any subfolder of INBOX, whereas the the following with a wrong mail_location showed that there are subfolders of INBOX doveadm -o mail_location=mbox:~user123 mailbox list -u user123 '*' Finally we could import the missing subfolders one after one in the mdbox server with commands like this: doveadm import -u user123 mbox:~user123/Mail "" mailbox INBOX/subfolder all It would be nice if doveadm could be changed to not overlook subfolders of the inbox with mbox format. Greetings, Jürgen -- Hochschulrechenzentrum der | Mail: Juergen.Obermann(a)hrz.uni-giessen.de Justus-Liebig-Universitaet | WWW: http://www.uni-giessen.de/obermann/ Heinrich-Buff-Ring 44 | Tel: 0641-99-13054 (0641-99-13001) D-35392 Giessen, Germany | Fax: 0641-99-13009

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