April 2012 - dovecot - dovecot.org

[Dovecot] Proxy and SSO (single sign-on)
by Miguel Tormo 11 Apr '12

11 Apr '12

Hello, I have a running setup with a dovecot imap4/pop3 proxy to a few dovecot backend servers which actually store the mailboxes. This is running smoothly and allows me to transparently distribute mailboxes. I'm using some "extrafield" configured in the LDAP passdb. However, now I would like to use GSSAPI (preferred) and NTLM for single sign-on. Both are pretty straightforward to configure in a single instance environment, but I don't know if they would work with proxy. For example, with GSSAPI there are two cases: 1) Just use gssapi mechanism, without PAM. Then, it a user presents a ticket the passdb ldap is not used, so the extrafields are never read. 2) Use gssapi and PAM (thus allowing using a kerberos password). But the extrafields feature isn't available with PAM passdb driver, so again the proxy won't work. The case for NTLM would fall into the first case, I think. Am I right regarding this scenario? Is there a way I could make SSO and proxying work? I'm currently using dovecot 2.0.16 (had to patch it to increment LOGIN_MAX_INBUF_SIZE to 4096 for GSSAPI to work, as I read somewhere in this list), but I could upgrade to a newer version if that allows all this to work. Thanks!

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Re: [Dovecot] Bug tracker
by interfaSys sàrl 11 Apr '12

11 Apr '12

I second that. New version 3.2 supports sub-projects, editions and components and is user-friendly. Cheers, Olivier > On Wed, Apr 11, 2012 at 09:26:20AM +0300, Timo Sirainen wrote: > > So, any suggestions for what software could do these things? I think > Request > Tracker has those features, but it's not really the nicest/prettiest > thing. > > May be worth to take a look at http://www.thebuggenie.com/. > > Thomas >

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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 11 Apr '12

11 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 11 Apr '12

11 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 11 Apr '12

11 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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