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[Dovecot] Folder Aliases - Revisited Yet Again
by Daniel L. Miller 11 Apr '12

11 Apr '12

I just did a search through my archives - seems this topic has been requested a few times since my posting two years ago. I asked about a specific implementation - which Mr. Sirainen never commented on. He was probably focused on something more important at the time - like a paying job. So I'll ask again... Calling Timo! If we can't get clients to agree on a "standard" set of folders (probably reasonably safe assumption) and if protocol implementations of variations of "*LIST*" are too far in the future...what about having alternative folder names presented based on login name - maybe by an extension? So where my usual login might be "user(a)domain.com", and that would continue to be supported as the default login, I could now have "user(a)domain.com+thunderbird", "user(a)domain.com+mobile", etc.? And each of those extensions would then have a system-wide map defining folder name relationships, like "Sent=Sent Items". Does this seem doable? -- Daniel

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[Dovecot] F5 SLB iRule - POP3 TLS Offload & Add Realm
by Lee Standen 10 Apr '12

10 Apr '12

Hey Guys, I figured someone might have use of this at some point. I've created an iRule for our F5 Load Balancer which performs the following tasks: - Appends STLS to the POP3 Capability list (it does this blindly, so expects the backend POP3 server to not return this) - Watches for the STLS command and initiates SSL negotiation with the client (leaves the connection to the backend POP3 server unencrypted) - Watches for the USER command (login attempt) and appends a realm if the user hasn't supplied one - Stops watching once a successful login occurs It's designed to be attached to port 110 and port 995 at the same time, and will disable SSL if the user is connecting to port 110 until the STLS command is issued. This is a first pass, so there's probably room for improvement, but it does seem to work. This will require LTM v10 (at least), as the SSL::collect command didn't exist prior to that version. Here's the rule: when CLIENT_ACCEPTED { if { [TCP::local_port clientside] == "110" } { # Disable SSL if we're on port 110 (as we're doing TLS Offload) set secure 0 SSL::disable } else { set secure 1 } set realm "mydomain.com" set debug 0 set loggedin 0 } when SERVER_CONNECTED { TCP::collect } when CLIENTSSL_HANDSHAKE { SSL::collect set secure 1 } when CLIENTSSL_DATA { if { $debug } { log local0. "CLIENT DATA: [SSL::payload]" } set lcpayload [string tolower [SSL::payload]] if { $lcpayload starts_with "user" } { scan [SSL::payload] {%s%s} command user set pos [string first $user [SSL::payload] 0] SSL::payload replace $pos [string length $user] "$user@$realm" if { $debug } { log local0. [SSL::payload] } } SSL::release if { $loggedin == 0 } { SSL::collect } } when CLIENT_DATA { if { $debug } { log local0. "CLIENT DATA: [TCP::payload]" } set lcpayload [string tolower [TCP::payload]] if { $lcpayload starts_with "stls" } { TCP::respond "+OK Begin TLS negotiation\r\n" TCP::payload replace 0 [TCP::payload length] "" TCP::release SSL::enable return } elseif { $lcpayload starts_with "user" } { scan [TCP::payload] {%s%s} command user set pos [string first $user [TCP::payload] 0] TCP::payload replace $pos [string length $user] "$user@$realm" if { $debug } { log local0. [TCP::payload] } } TCP::release if { $loggedin == 0 } { TCP::collect } } when SERVER_DATA { if { $debug } { log local0. "SERVER DATA: [TCP::payload]" } set lcpayload [string tolower [TCP::payload]] if { $lcpayload starts_with "+ok logged in" } { TCP::release set loggedin 1 event disable if { $debug } { log local0. "POP3 Login Successful" } return } elseif { $lcpayload contains "capa" } { TCP::payload replace [expr [TCP::payload length] - 3] 0 "STLS\r\n" } if { $secure == 1 && $loggedin == 0 } { clientside { SSL::collect } } elseif { $secure == 0 && $loggedin == 0 } { clientside { TCP::collect } } TCP::release if { $loggedin == 0 } { TCP::collect } }

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[Dovecot] sieve replace dot string for foldername
by Robert Schetterer 10 Apr '12

10 Apr '12

Hi, i am playing about mail archive this is what allready works for me require ["variables","date","fileinto","mailbox","envelope","subaddress","regex"]; # Extract date info if currentdate :matches "year" "*" { set "year" "${1}"; } if currentdate :matches "month" "*" { set "month" "${1}"; } if currentdate :matches "day" "*" { set "day" "${1}"; } if envelope :detail :matches "to" "*" { set "to" "${1}"; } if true { fileinto :create "INBOX.${year}.${month}.${day}.${to}"; stop; } but ${to} may have a dot included, foldernames with dot are not allowed in my dove setup yet ( and i dont want to change it ) i am looking for a way ( guess regex ) for replace a dot in string replaced by a space char on the fly -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria

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[Dovecot] Username from rfc822Name subject alternative name
by Бранко Мај ић 10 Apr '12

10 Apr '12

Hello, I'm looking into adding support for extracting the username from client certificate's rfc822Name (from the subjectAltName extension). The question I have is what would be the best approach to do this? Current implementation has a kind of clean code since it just goes through the subject name, extracting the values with X509_NAME_get_text_by_NID (while NID is obtained with OBJ_txt2nid). If I were to add this, it's bound to make the code a little bit more complicated since SAN's can't be retrieved in the same way. So far in terms of options I have, I can see the following: 1. Create a distinct configuration option for the ssl_cert_username_field (i.e. specify something like "sanrfc822Name" to have Dovecot extract the username from the designated alternative name). 2. Make the current code fail-over to rfc822Name SAN if emailAddress is provided for ssl_cert_username (less invasion in code, but less flexibility as well). Any input/recommendation/directioning is welcome. I've wanted to actually first write a patch, and then submit it, but I think it might be better to check what would be preferable by Dovecot maintainers/devs. Best regards -- Branko Majic Jabber: branko(a)majic.rs Please use only Free formats when sending attachments to me. Бранко Мајић Џабер: branko(a)majic.rs Молим вас да додатке шаљете искључиво у слободним форматима.

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[Dovecot] Dsync test on 2.1.3
by Jitendra Bhaskar 10 Apr '12

10 Apr '12

Hi, I am using dovecot version 2.1.3 on centos. I tested dsync from my live server to one of backup server. But I got that its working for most of the user and there is problem for few user. Some users got duplicated mail to their mailbox and I saw there is some extra folders i.e Sent Items_* , Draft_* and Trash_* in few users mail box. and I synced only from main server to backup server. I didn't enable mail_plugin in backup server. My configuration for testing of Dsync on master server is as: mail_plugins = $mail_plugins notify replication service aggregator { fifo_listener replication-notify-fifo { user = vmail mode = 0666 } unix_listener replication-notify { user = vmail mode = 0666 } } service replicator { # start replication at startup process_min_avail = 1 } plugin { #host1 replicates to host2 mail_replica = remote:root@backup_server } #dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u -l%{lock_timeout} -n%{namespace} dsync_remote_cmd = ssh -l root %{host} doveadm dsync-server -u%{user} -l%{10} -n%{namespace} service doveadm { user = root } And in backup server : service doveadm { user = root } 1. Problem is I am not getting why some user getting lots of duplicate mails. 2. Why duplicate folders like Sent Items_* and Trash_* created for few users 3. I used only one way syncing then why both replicated. Note: i am using root only for testing purpose * Thanks & Regards * *Jitendra Kumar Bhaskar* Cell:- +91 7306311531 +91 8102997821

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[Dovecot] Authentication mechanism and Password scheme
by Костырев Александр Алексеевич 10 Apr '12

10 Apr '12

Good day! I'm just trying to figure out that my understanding of subject is correct. So, if I want to store passwords in my database encrypted with SSHA512 scheme, my only choice for Authentication mechanism is plaintext? Thanks in advance! -- С уважением, Костырев Александр системный администратор ЗАО "Сервер-Центр" тел.: (423) 262-02-62 (доб. 2037) факс: (423) 262-02-10

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[Dovecot] Per IP virtual domain
by Stéphane Locatelli 10 Apr '12

10 Apr '12

Hello, My dovecot server (2.0.18 on FreeBSD 9) has multiple interface. I would like to configure the authentication (pop and imap) to append different domain according to the local IP address. I've tested this: local 10.0.0.1 { auth_default_realm = domain1.com } local 10.0.0.2 { auth_default_realm = domain2.com } But it doesn't work. I get this error message: doveconf: Fatal: Error in configuration file /usr/local/etc/dovecot/dovecot.conf line 58: Auth settings not supported inside local/remote blocks: auth_default_realm -- Stephane Locatelli

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[Dovecot] 2.0/2.1 - different behavior for LIST-EXTENDED
by Peter Mogensen 10 Apr '12

10 Apr '12

Hi Timo, We are sitting here wondering if this difference in behaviour between dovecot 2.0.17 and 2.1.3 is intended. When you create a folder, subscribe to it and rename it (without changing the subscription) these are the behaviours: For 2.0.17: . list (SUBSCRIBED) "" "*" RETURN (STATUS (MESSAGES)) * LIST (\Subscribed \NonExistent) "." "INBOX.test" For 2.1.3: . list (SUBSCRIBED) "" "*" RETURN (STATUS (MESSAGES)) * LIST (\Subscribed) "." "INBOX.test" * NO Mailbox doesn't exist: test If you don't use rfc5819 the folder will just get silently ignored by dovecot 2.1.x, but if you actually try to get the number of messages you'll get the error. It seems to me from reading rfc5258 that the 2.0.x behaviour is the correct ?? /Peter

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[Dovecot] Problem with quota warning
by Patrick Westenberg 10 Apr '12

10 Apr '12

Hi again, my test environment is working now and finally I tried to implement my quota warning but it is not working. LDA says the mailbox is full even it is not (only 81% and that is why the quota warning is executed). Further I used :noenforcing in my script. Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): Debug: Namespace INBOX.: Using permissions from /var/mail/k-team.info/test/mdbox: mode=0700 gid=-1 Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): Debug: Quota root: name=User quota backend=dict args=:file://mdbox/dovecot-quota:noenforcing Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): Debug: Quota warning: bytes=0 (90%) messages=0 reverse=no command=quota-warning 90 raw mail user Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): Debug: Quota warning: bytes=0 (75%) messages=0 reverse=no command=quota-warning 75 raw mail user Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): Debug: dict quota: user=raw mail user, uri=file://mdbox/dovecot-quota:noenforcing, noenforcing=0 Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): Debug: none: root=, index=, control=, inbox=, alt= Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): Debug: Destination address: test(a)k-team.info (source: user@hostname) Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): msgid=unspecified: save failed to INBOX: Quota exceeded (mailbox for user is full) Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): msgid=unspecified: rejected: Quota exceeded (mailbox for user is full) Apr 9 15:08:21 backend01 dovecot: lda(test(a)k-team.info): msgid=: Return-Path missing, rejection reason: Quota exceeded (mailbox for user is full) # 2.1.3: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.4 auth_debug = yes auth_debug_passwords = yes auth_verbose = yes listen = 172.17.99.96 mail_debug = yes mail_gid = vmail mail_home = /var/mail/%d/%n mail_location = mdbox:~/mdbox:INDEX=/var/indexes/%d/%n mail_plugins = quota mail_uid = vmail managesieve_notify_capability = mailto 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 ihave namespace { inbox = yes location = prefix = INBOX. separator = . type = private } passdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { autocreate = INBOX.Sent autocreate2 = INBOX.Trash autocreate3 = INBOX.Drafts autocreate4 = INBOX.Spamverdacht autosubscribe = INBOX.Sent autosubscribe2 = INBOX.Trash autosubscribe3 = INBOX.Drafts autosubscribe4 = INBOX.Spamverdacht quota = dict:User quota::file:%h/mdbox/dovecot-quota quota_rule2 = INBOX.Trash:storage=+100M quota_warning = storage=90%% quota-warning 90 %u quota_warning2 = storage=75%% quota-warning 75 %u sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_global_path = /usr/local/etc/dovecot/sieve/default.sieve } protocols = imap pop3 lmtp sieve service auth { unix_listener auth-userdb { user = vmail } } service imap-login { service_count = 1 } service lmtp { inet_listener lmtp { address = 172.17.99.96 port = 24 } } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 1 } service quota-warning { executable = script /usr/local/etc/dovecot/quota-warning.sh unix_listener quota-warning { user = vmail } user = vmail } ssl = required ssl_cert = </etc/ssl/certs/imap.wk-serv.de.crt ssl_key = </etc/ssl/certs/imap.wk-serv.de.key userdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = quota sieve } protocol imap { mail_plugins = quota imap_quota autocreate } protocol pop3 { pop3_client_workarounds = oe-ns-eoh, outlook-no-nuls } #!/bin/sh PERCENT=$1 USER=$2 cat << EOF | /usr/local/libexec/dovecot/dovecot-lda -d $USER -o "plugin/quota=dict:User quota::file:%h/mdbox/dovecot-quota:noenforcing" From: support(a)example.com Reply-To: support(a)example.com Subject: Speicherplatz Ihrer Mailbox ...

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[Dovecot] Multiply mailboxes vs one huge
by Alexander Chekalin 10 Apr '12

10 Apr '12

Hello, as I need to store a lot of messages on my IMAP server (order of 900K-1000K; this is an archive for some time, maybe a year or so), I see some "slowness" in dealing with such a huge amount. I mainly need to do searches like "get all messages from user1(a)domain1.com to user2(a)domain2.tld recieved between date1 and date2". So I really interested will it be wise to a) split all messages into several smaller mailboxes (per-month, or per-day, or create 2-level-structure like "month/day/") b) use dbox (vs currently used mbox) storage scheme (I'm afraid of mdbox as I still not sure I'll be able to parse it by scripts later "just in case") Dovecot is the latest one (2.1.3). No compression Dovecot-side, but it mails are in zfs volume with compression on. I ask this mainly due to my not fully understand how Dovecot indexes are working. I also test another approach: to use my own index somewhere outside Dovecot which will store reference between emails and UIDs, and dates and UIDs, so I'll simple query my index for things I need. But then, that's exactly what IMAP index can do, so I simple slow my search down, isn't it? The only reason I think about my own index is I won't use 'all header' as search scope, I need to deal only with From:, To:, Cc:, Bcc: (if any), Recieved (if nowehere else I see the from/to info), and date field(s) - I doubt IMAP will care for that for me. Yours, Alexander

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