- dovecot - dovecot.org

[Dovecot] AD Kerberos and Dovecot
by Christian Felsing 22 Jan '14

22 Jan '14

Hello, I got stucked on Kerberos auth with Dovecot: Jan 22 17:48:36 test dovecot: auth: Error: LDAP: binding failed (dn cn=AUTH\_ldap): Local error, SASL(-1): generic failure: GSSAPI Error: Unspecified GSS failure. Minor code may provide more information (Credentials cache file '/tmp/krb5cc_1003' not found) kinit and and ldapsearch with gssapi auth are working. Are there instructions how to set up Kerberos auth with Dovecot and Active Directory? How does Dovecot handle Kerberos tickets? best regards Christian

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[Dovecot] master password
by Marc Perkel 21 Jan '14

21 Jan '14

This is probably easy but how would a set a secret static master password so that if I typed it in for any login it would be happy? I can't use the * separator method in this case because it screws up squirrelmail.

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[Dovecot] Shared mailboxes / IMAP folder performance
by Sebastian Schlatow 21 Jan '14

21 Jan '14

Hello, how performant is an IMAP shared folder / mailbox if it contains 2 million mails? Is it possible two have such a quantity of mails in a shared folder? Is it possible to search that shared folder for mails in a fast way? Regards Sebastian

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[Dovecot] Failure in doveconf
by Andrew Ray 21 Jan '14

21 Jan '14

I ran into a problem while configuring dovecot. Quickly reading the paragraph below, I saw "yes" as one of the options, and put that into the config, as below: # In case of password mismatches, log the attempted password. Valid values are # no, plain and sha1. sha1 can be useful for detecting brute force password # attempts vs. user simply trying the same password over and over again. # You can also truncate the value to n chars by appending ":n" (e.g. sha1:6). auth_verbose_passwords = yes The result from doveconf -n was: doveconf: Error: x�η doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf: 0pη (where the error message was always a changing, apparently random set of characters.) So I managed, by going back through the config file and commenting out options, to find this was the problem and then finally read what are the acceptable values. Any other place that I have tried to give a non acceptable value I get a reasonable error message with line number and problem. Well, now I fixed my original problem, but something needs to be adjusted in the error handling code. Sincerely, Andrew Ray -- Andrew Ray +1 404-418-5443 +421 (0) 917 832 253 http://guns.freedomlives.net/

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[Dovecot] forwarded message is broken in 2.2.10 with pigeonhole-0.4.2
by Burckhard Schmidt 21 Jan '14

21 Jan '14

Hi, forwarding a message with sieve like redirect:copy "me(a)other.domain"; was working without any problem until dovecot-2.1.17, dovecots lmtp and dovecot-2.1-pigeonhole-0.3.5. Using dovecot-2.2.10 , dovecots lmtp and dovecot-2.2-pigeonhole-0.4.2 the structure of a forwarded message is broken. Content of a message is not displayed or an attachment (for instance pdf) can not be opened by (different) clients. Writing a html mail or plain one makes no different. I have compared two messages and the main different is a missing Content-Type: multipart/alternative; boundary="...." to encapsulate the body of the forwarded message. Was it lost in sieve? Here parts of a "well" forwarded message: Return-Path: ... ... Received: by mails.cms.hu-berlin.de (Postfix, from userid 29) id A78C738734; Tue, 14 Jan 2014 17:10:54 +0100 (CET) X-Sieve: Pigeonhole Sieve 0.3.5 X-Sieve-Redirected-From: schmidt(a)mails.cms.hu-berlin.de Delivered-To: <schmidt(a)mails.cms.hu-berlin.de> Received: from mails.cms.hu-berlin.de by suncom1 (Dovecot) with LMTP id p8HoIn9h1VKnTwAA9XuJ/g for <schmidt(a)mails.cms.hu-berlin.de>; Tue, 14 Jan 2014 17:10:54 +0100 ... Message-ID: <52D5618D.6050905(a)gmail.com> Date: Tue, 14 Jan 2014 17:10:53 +0100 From: xy <xy(a)gmail.com> User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: schmidt(a)hu-berlin.de Subject: from gmail with attachment Content-Type: multipart/mixed; boundary="------------070108020005050001040207" X-ENVELOPE-TO: <me(a)other.domain> This is a multi-part message in MIME format. --------------070108020005050001040207 Content-Type: multipart/alternative; boundary="------------090806050202050708030507" --------------090806050202050708030507 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 8bit Hallo. text --------------090806050202050708030507 Content-Type: text/html; charset=ISO-8859-15 Content-Transfer-Encoding: 8bit <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-15"> </head> <body text="#000000" bgcolor="#FFFFFF"> Hallo. text P. </body> </html> --------------090806050202050708030507-- --------------070108020005050001040207 Content-Type: application/pdf; name="auftrag-2014-eng-Hinweise.pdf" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="auftrag-2014-eng-Hinweise.pdf" JVBERi0xLjYNJeLjz9MNCjcyIDAgb2JqDTw ... ... c3RyZWFtDWVuZG9iag1zdGFydHhyZWYNCjExNg0KJSVFT0YNCg== --------------070108020005050001040207-- message end Now a broken message without "Content-Type: multipart/alternative;": Return-Path: ... ... Received: by mail5.cms.hu-berlin.de (Postfix, from userid 29) id 47C4C6D46E; Tue, 14 Jan 2014 17:43:54 +0100 (CET) X-Sieve: Pigeonhole Sieve 0.4.2 X-Sieve-Redirected-From: testuser(a)mail5.cms.hu-berlin.de Delivered-To: <testuser(a)mail5.cms.hu-berlin.de> Received: from mail5.cms.hu-berlin.de by suncom5 (Dovecot) with LMTP id mnY0AEpp1VLsaQAA0tuC1A for <testuser(a)mail4.cms.hu-berlin.de>; Tue, 14 Jan 2014 17:43:54 +0100 ... Message-ID: <52D56948.1090704(a)gmail.com> Date: Tue, 14 Jan 2014 17:43:52 +0100 From: xy <xy(a)gmail.com> User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: testuser(a)hu-berlin.de Subject: from gmail with attachment Content-Type: multipart/mixed; boundary="------------030506080302040201020604" X-ENVELOPE-TO: <me(a)other.domain> This is a multi-part message in MIME format. --------------030506080302040201020604 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit text. --------------030506080302040201020604 Content-Type: application/pdf; name="auftrag-2014-eng-Hinweise.pdf" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="auftrag-2014-eng-Hinweise.pdf" JVBERi0xLjYNJeLjz... ... c3RyZWFtDWVuZG9iag1zdGFydHhyZWYNCjExNg0KJSVFT0YNCg== --------------030506080302040201020604-- message end -- Mit freundlichen Grüßen --- Burckhard Schmidt Abteilung Systemsoftware und Kommunikation ZE Computer- und Medienservice der Humboldt-Universität zu Berlin Postanschrift: Unter den Linden 6, 10099 Berlin Standort: Rudower Chaussee 26; 12489 Berlin Tel.: +49-30-2093-70058 Fax: +49-30-2093-2959 Mail: bschmidt(a)cms.hu-berlin.de

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[Dovecot] Dovecot doesn't seem to report all subfolders to Thunderbird
by dovecot＠voidptr.de 21 Jan '14

21 Jan '14

Hi, I've recently migrated my emails from a Yahoo account to my own mailserver on a VPS. Ever since then, Thunderbird seems to have issues with the mailbox's directory structure: When I start Thunderbird, it immediately deletes the local copies of all 3rd-level folders (i.e. subfolders of a subfolder of a folder in the mailbox root). Since that didn't happen with the Yahoo account, I assume it's some kind of error or misconfiguration of Dovecot. Here's an example of the mailbox structure: voidptr.de '-> University '-> IEEE '-> Conference "University" and "IEEE" work without problems, but "Conference" gets deleted locally every time I start Thunderbird. When I collapse and re-expand "University" in the folder panel, all subfolders (including "Conference") reappear, but Thunderbird has to re-download the contents of "Conference", since it deleted the local copies earlier. It looks as if Dovecot only reported the topmost two folder levels when Thunderbird requests a folder list... Is there any way I can change that behavior? Nils $ doveconf -n # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-042stab078.22 x86_64 Debian 7.3 auth_verbose = yes mail_location = maildir:~/Maildir:LAYOUT=fs namespace { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = subscriptions = yes } passdb { args = scheme=SHA512-CRYPT username_format=%n /etc/dovecot/users driver = passwd-file } protocols = " imap" service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } } service imap-login { inet_listener imaps { port = 0 } } ssl = required ssl_cert = </etc/ssl/certs/own/voidptr.de.pem ssl_key = </etc/ssl/certs/own/voidptr.de.key userdb { args = username_format=%n /etc/dovecot/users default_fields = home=/home/%n driver = passwd-file }

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[Dovecot] Sieve Filter based on Email Body
by Roman Gelfand 21 Jan '14

21 Jan '14

Is it possible to file emails based on the contents of email body? If yes, can you point me to an example. Thanks in advance

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[Dovecot] A variable for the unix user or home path would be useful in some cases
by interfaSys sàrl 20 Jan '14

20 Jan '14

Hello, In our hosting environment, we let users share mailboxes across all their domains and think it's best if the shared mailbox listing (in a file) stays in their unix home path. That would be: /home/USER/imap/shared-mailboxes.db Unfortunately, it seems there is no way to generate that path using a variable. Something like this would be convenient: acl_shared_dict = file:%v/imap/shared-mailboxes.db Instead, we have to use something like this: acl_shared_dict = file:~/../../../shared-mailboxes.db which only works for virtual users. Did somebody solve this another way? Could we have the unix user or home path as a variable? Or could we have a modifier giving us the path or the unix user based on the unix UID? Cheers, Olivier

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Re: [Dovecot] imap abort after upgrade from 2.2.4 to 2.2.7
by morrison 20 Jan '14

20 Jan '14

When I did upgrade, 2.2.7 was the latest release. When I ran into the problem, I checked back and found 2.2.8 and 2.2.9 were released shortly one after another. It seemed these releases were sort of buggy. I would like to know if what I described in my previous email was an known issue and was addressed before upgrade to 2.2.10. We are using dovecot as our internal mail service. So stable is most important to us. Regards,

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[Dovecot] mail check
by Paolo 20 Jan '14

20 Jan '14

Is there some simple script that parsing the dovecot.info.log can give me a list of the mail checks for a user (better if reports also the type (POP/IMAP), and result of the sessions (Ok/Fail/Error/...))? Regards, Paolo

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[Dovecot] auth_default_realm, pam_krb5, gssapi
by Sergey Urushkin 20 Jan '14

20 Jan '14

Hi, Just writing here my note about auth_default_realm, pam_krb5 and gssapi. It seems that 'pam' passdb and 'gssapi' auth_mechanism doesn't honor 'auth_default_realm' setting, at least in several setups I deal with. Here is a part of the config: passdb { args = max_requests=100 cache_key=%u%r dovecot driver = pam } auth_default_realm = REALM.COM auth_mechanisms = plain login apop gssapi auth_username_format = %Uu The problem is that pam_krb5 strips default realm from username (by default), even if auth_default_realm is specified and even if user logs in as 'user1(a)realm.com' (with domain part). A part of auth.log: mail auth: pam_krb5(dovecot:auth): user USER1 authenticated as USER1(a)REALM.COM The same for GSSAPI auth, if specified authorization name doesn't contain domain part. A part of mail.log: mail dovecot: imap-login: Login: user=<USER1>, method=GSSAPI, rip=172.16.0.1, lip=192.168.1.1, mpid=5828, TLS, session=<bpzvRmDwPACsFwCX> For several reasons I do need username inside dovecot to contain domain part. So, I found a solution to this problem - modifying /etc/krb5.conf this way: [libdefaults] default_realm = REALM.COM [realms] REALM.COM = { auth_to_local = RULE:[1:$1@$0] } This will add realm part to the local username despite using default realm. Maybe it's better to put this example to the wiki? Tested with ubuntu 12.04 and dovecot 2.2.10, mit kerberos 1.10, amd64. Taking the opportunity, I'd like to ask, is there a way to make usernames case insensitive while using GSSAPI. The case: klist shows: Principal: user1(a)REALM.COM username in thunderbird 'uSer1(a)REALM.COM'. Dovecot gives me this message (I use auth_username_format=%Uu for pam_krb5 to be able to login with lowercase realm): dovecot: auth: gssapi(USER1(a)REALM.COM,172.16.0.1,<IIgwMGbw3ACsFgA4>): User not authorized to log in as USER1(a)REALM.COM As I know kerberos usernames are case insensitive (user part), at least kinit and windows against AD works that way. Seems that k5credentials passdb extra field will not help here too. Does anyone have an idea? Thanks. -- Best regards, Sergey Urushkin

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[Dovecot] New document on troubleshooting Dovecot IMAP
by Steve Litt 20 Jan '14

20 Jan '14

Hi all, Check out my new document on troubleshooting Dovecot IMAP: http://www.troubleshooters.com/emailtech/imap_troubleshooting.htm Thank you to all those, on this mailing list and on the #dovecot IRC channel, for helping me with this. Thanks, SteveT Steve Litt * http://www.troubleshooters.com/ Troubleshooting Training * Human Performance

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[Dovecot] Shared Folters with LDA/Sieve
by Dieter Knopf 19 Jan '14

19 Jan '14

Hello, i'm searching for a way to use Shared mailboxes with Sieve Filtering. I need global email addresses like: info(a)foo.tld contact(a)foo.tld help(a)foo.tld Every address with own Sieve-rules for filtering and sorting of incoming mails. Now every user needs access to this folders, but how? How should i create the "global" addresses? I already found http://wiki2.dovecot.org/SharedMailboxes/Public , but that's just a public namespace. Is there any FAQ available for this? Thank you very much Dieter

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[Dovecot] Dovecot - not pulling pop3s email from virtual mbox
by Ganesh Hariharan 18 Jan '14

18 Jan '14

Hi All, I am bit strugging to get this work, and bit perplexed to set the right configuration to get this work, btw: I am using passdb without any DB based auth. the latest logs after debug mode setting is below Jan 16 09:27:04 ns dovecot: auth: Debug: Module loaded: /usr/lib/dovecot/auth/libdriver_sqlite.so Jan 16 09:27:04 ns dovecot: auth: Debug: Module loaded: /usr/lib/dovecot/auth/libmech_gssapi.so Jan 16 09:27:04 ns dovecot: auth: Error: passwd-file /etc/dovecot/users: User info(a)ghhdomain.com has invalid GID '/var/spool/mail/ghhdomain/info/' Jan 16 09:27:04 ns dovecot: auth: Debug: passwd-file /etc/dovecot/users: Read 0 users Jan 16 09:27:04 ns dovecot: auth: Fatal: No passdbs specified in configuration file. CRAM-MD5 mechanism needs one Jan 16 09:27:04 ns dovecot: master: Error: service(auth): command startup failed, throttling Please see my configs 10-mail.conf mail_location = maildir:/var/spool/mail/%d/%n 10-ssl.conf # SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt> ssl = yes ssl_cert = </etc/postfix/newcert.pem ssl_key = </etc/postfix/newkey.pem auth-system.conf.ext #passdb { #driver = passwd-file #args = scheme=cram-md5 username_format=%u /etc/dovecot/passwd #} userdb { driver = passwd-file args = username_format=%u /etc/dovecot/users } auth-passwdfile.conf.ext passdb { driver = passwd-file args = scheme=CRYPT username_format=%u /etc/dovecot/users } users file look like this info(a)ghhdomain.com: {CRAM-MD5}e02d374fde0dc75a17a557039a3a5338c7743304777dccd376f332bee68d2cf6:503:503 I created using doveadm pw , and pasted the output to the above file Please let me know what went wrong, and what I need to do now... thanks G. userdb { driver = passwd-file args = username_format=%u /etc/dovecot/users I have made a mess of these configuration after many tries.. yet not sure what is the simple steps to make it work

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[Dovecot] Sizing MTA servers
by Murray Trainer 18 Jan '14

18 Jan '14

Hi All, This is probably a bit off-topic but does anyone have any idea about sizing MTA servers. We have about 200,000 emails/hr incoming and outgoing. I am intending using Exim and Spamassassin on each MTA. How many servers using recent hardware would I need to cope with this mail throughput? What is more important on the servers, CPU or RAM? Should I have mail going both directions on each server or dedicate a pair each for incoming and outgoing mail> Thanks for any feedback. Murray

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[Dovecot] doveconf base_dir
by Andreas Schulze 18 Jan '14

18 Jan '14

Hello, today I run the command "doveadm auth cache flush" for the first time. # doveadm auth cache flush doveadm(root): Error: userdb lookup: connect(/var/run/dovecotauth-master) failed: No such file or directory 0 cache entries flushed # base_dir was the only item contain 'run' and it did not end with a / So I tried to set base_dir to /var/run/dovecot/ and could now rerun "doveadm auth cache flush" without problems. I compile dovecot from source and found --with-rundir=/var/run/dovecot as an option to configure. I changed to /var/run/dovecot/, recompile and removed the base_dir setting in dovecot.conf again. Now "doveadm auth cache flush" work out of the box. doveconf -d base_dir is var/run/dovecot/. Finaly I compiled dovecot with --localstatedir=/var and removed --with-rundir from configure. The resulting package had again base_dir = /var/run/dovecot so "doveadm auth cache flush" don't work. looks like somewhere the missing / should be added in case base_dir has no trailing / without special configuration. Andreas

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[Dovecot] imap abort after upgrade from 2.2.4 to 2.2.7
by morrison 17 Jan '14

17 Jan '14

Hi, I used to use dovecot 2.2.4. I saw lots of warnings saying 'Extension header update points outside header size'. I upgraded to dovecot 2.2.7, based on the discussion in mail list. Now, I see lots of imap aborts around: src/lib-index/mail-index-transaction-export.c:203: i_assert(u32.offset + u32.size <= ext_hdr_size); I also noticed, in some mailbox, imap process kept abort until all index files in the mailbox were manually deleted. Did someone run into the same problem and any solution to this? Thanks,

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[Dovecot] Dovecot IMAP proxy for gmail IMAP server
by CM Reddy 17 Jan '14

17 Jan '14

Hi All, I am experimenting to use Dovecot as an IMAP proxy to GMAIL server. I would like configure my localhost as an Dovecot IMAP proxy and trying to access my GMAIL using the Thunderbird email client. Please share the steps to configure and access my mails from GMAIL server. - Thanks CM Reddy

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[Dovecot] Use dovecot for enterprise
by ♥ NiNJA ♂ 17 Jan '14

17 Jan '14

Hi guys I like to know is it possible to create Unlimited number of email accounts with Unlimited Storage in each email ? Does anybody do it ? Does dovecot good enough for having more than millions of users ? Thanks :-)

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[Dovecot] Changing user specific configs one at a time using userdb text file to override defaults...
by Charles Marcus 17 Jan '14

17 Jan '14

Hi all, Ok, I'm now interested in testing converting users one at a time to mdbox+SIS, but want to make sure I understand how to do this. It appears the best way - for smaller installations at least - is to just use a simple text file userdb to override the defaults, then once all of the users have been converted, change the defaults and remove the userdb txt file overrides. So, would love to hear details from others who have done something like this. Thx! -- Best regards, Charles

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[Dovecot] Getting more out of the %w variable.
by Julian PG 17 Jan '14

17 Jan '14

Hello Dovecot community, I have a backend database application that handles all system wide user authentication (from web to mail and more). Passwords are not stored in plain text. So I would like to support more than PLAIN. Perhaps at least CRAM-MD5 or DIGEST-MD5 for example. Even though connections over TLS are encouraged (and even enforced). Some MUA and users still think its a better idea than PLAIN (even sent over an encrypted session). I have a vague memory of getting some warnings with thunderbird in regards to the use of PLAIN. Of course the %w variable would have to include the challenge as well as the response. Or perhaps even a seperate variable for the challenge? Or course at the moment the %w variable is an empty string for anything other than PLAIN. This would make some users and MUAs happy (even though pointless over TLS - I agree). Your thoughts would be appreciated. Regards, Julian. -- Not time for sigs!

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[Dovecot] Received: header showing 127.0.0.1 after switch to dovecot LDA?
by Charles Marcus 16 Jan '14

16 Jan '14

Hi all, I'm guessing this is correct behavior, but wanted to make sure... I noticed that for locally delivered messages (between 2 local users inside our domain, so they never leave the server), the first Received: header line content changed after I switched to the dovecot LDA. Before, using postfix/virtual for delivery, the header looked like this: Received: from [192.168.1.25] (client.example.com [192.168.1.25]) by smtp.example.com (Postfix) with ESMTPSA id 67E33A20542; Wed, 6 Jun 2012 10:55:55 -0400 (EDT) But now it looks like this: Received: from [127.0.0.1] (client.example.com.com [192.168.1.14]) by smtp.example.com (Postfix) with ESMTPSA id 4EEF7802AF325 for <me(a)example.com>; Wed, 15 Jan 2014 18:29:17 -0500 (EST) so, 2 questions... 1. Why does it show 127.0.0.1 instead of the client IP, and 2. Why did postfix/virtual include the "for <me(a)example.com>;" but the dovecot LDA doesn't? Thanks, -- Best regards, Charles

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[Dovecot] Replication file sizes
by IT geek 31 16 Jan '14

16 Jan '14

Hi, I'm using Dovecot 2.2.9 to replicate my mailbox to a remote server. My mailbox on ServerA is 235Mb, but on ServerB it ends up being 358Mb. Does anyone know why this is? Shouldn't they be the same size? doveconf -n from ServerA: # 2.2.9: /usr/pkg/etc/dovecot/dovecot.conf # OS: NetBSD 5.2 cobalt auth_mechanisms = plain login doveadm_password = secret doveadm_port = 12345 first_valid_uid = 1003 last_valid_uid = 1020 listen = 192.168.1.1 mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_plugins = " notify replication" passdb { driver = passwd } plugin { mail_replica = tcp:serverb.test.com } protocols = imap service aggregator { fifo_listener replication-notify-fifo { mode = 0666 } unix_listener replication-notify { mode = 0600 } } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } user = root } service doveadm { inet_listener { port = 12345 } } service imap-login { inet_listener imap { port = 0 } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 } } ssl_cert = </etc/openssl/certs/servera.test.com.crt ssl_key = </etc/openssl/private/serverb.test.com.key userdb { driver = passwd } protocol lda { postmaster_address = postmaster(a)test.com

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[Dovecot] Dovecot 2 separate login for POP3 connections ?
by BONNET, Frank 16 Jan '14

16 Jan '14

Hello Is it possible to configure a separate logfile for incoming POP3 connections ( dovecot 2.2.9 ) thanks

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[Dovecot] mail-filter always results in corrupted indexes
by martijn.list 16 Jan '14

16 Jan '14

Hi, I'm experimenting with the mail-filter plugin but whenever I add anything to a message, it always results in an corrupted cache: from the logs: Dec 14 16:09:55 ciphermail-webmail dovecot: imap(martijn=djigzo.com(a)ciphermail.private): Error: Corrupted index cache file /var/vmail/martijn=djigzo.com(a)ciphermail.private/dovecot.index.cache: Broken physical size for mail UID 76 Dec 14 16:09:55 ciphermail-webmail dovecot: imap(martijn=djigzo.com(a)ciphermail.private): Error: read() failed: Invalid argument Dec 14 16:10:02 ciphermail-webmail dovecot: imap(martijn=djigzo.com(a)ciphermail.private): Error: Cached message size smaller than expected (773 < 777) Dec 14 16:10:02 ciphermail-webmail dovecot: imap(martijn=djigzo.com(a)ciphermail.private): Error: Maildir filename has wrong S value, renamed the file from /var/vmail/martijn=djigzo.com@ciphermail.private/cur/1387033802.M114583P9631.ciphermail-webmail,S=773,W=791:2, t A do-nothing filter that just sends the input to the output works but whenever I add something trivial to the message, the cache is always corrupted. I using Dovecot 2.2.9.1 (from the deb archives). I use the following trivial test to add some XXX chars and and later remove them. In mail-filter.sh I append some chars and in mail-filter-out I filter these chars out (this is just a test) cat > /tmp/dovecot-in.txt echo "XXX" >> /tmp/dovecot-in.txt cat /tmp/dovecot-in.txt mail-filter-out: cat > /tmp/dovecot-out.txt sed -i /XXX/d /tmp/dovecot-out.txt cat /tmp/dovecot-out.txt Any idea what I'm doing wrong? Kind regards, Martijn Brinkers

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