- dovecot - dovecot.org

[Dovecot] dsync and active-active fault tolerance mail servers
by Luigi Rosa 21 Aug '10

21 Aug '10

I would like to set up an active-active fault tolerance couple of mail servers. Is the following procedure correct? Let's suppose I want to set up two servers for acme.com, mail1.acme.com and mail2.acme.com I declare both servers as MX in DNS configuration. Mailbox are stored in maildir with a single UID/GID owner for all the maildir files Userbase is MySQL, user tables are replicated using MySQL tools; in this case, the replica is one way, that is mail1.acme.com holds the "master" copy of MySQL tables and mail2.acme.com hold the "copy". The replica is done via dsync with a procedure like this executed on mail1.acme.com server: foreach mailbox { dsync mirror mailbox } Where mailbox is the full mail address, used also as a login name for authentication. My goal is to allow users to connect the mail servers they like and have all their mail (a 10/15 minute of sync delay is acceptable). This is the theory, now some questions. 1) Use Linux user/group owner of the files and directories are the same on both hosts (they are both foobar), but have different numeric ID, in one host foobat has UID 1234 and on the other host foobar has UID 2345. Is this an issue? 2) Mail location path is the same on both hosts, but where does dsync get it? Does dsync get all the information from the userbase defined in dovecot.conf (and other included files)? 3) Have I to scan the entire userbase and execute dsync for each user, or is there a trick to do for every user with a single command? 4) How often is good to run the synchronization? 5 minutes? 10? 15? 5) What is the correct command line to invoke dsync in this scenario? 6) Does anyone else tried this? :) Thank you. Ciao, luigi -- / +--[Luigi Rosa]-- \ (1) Everything depends. (2) Nothing is always. (3) Everything is sometimes.

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[Dovecot] sieve_after scripts with virtual domains
by Ciro Scognamiglio 21 Aug '10

21 Aug '10

Hi all, first of all I am new to the list, so hello everyone :) I recently encountered an annoying problem with sieve, I am using dovecot version 1.2.13 on centos 5.5, the packages installed are the following: dovecot-sieve-0.1.17-5.el5 dovecot-managesieve-0.11.11-0_4.el5 dovecot-1.2.13-1_111.el5 the mail server is configured with virtual hosts (mysql), also the sieve plugin and managesieve are active. Users can create their own filters through roundcube and everything works fine. I also put two script to be executed before all sieve scripts in sieve_before, they just move any SPAM or VIRUS tagged message to a Junk folder. The problem is that while this works for my domain (that is also the server domain) it doesn't for the others domains, it seems the sieve_before scripts get ignored. I made many tests with the domains I am hosting, if I send a spam message (I am using the spamassassin test messages) it gets marked as SPAM, but gets only moved to the junk folder if the recipient is @cslash.net (that is my domain). here is some config extracts: === dovecot.conf === plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_before = /srv/mail/sieve-before sieve_after = /srv/mail/sieve-after } ======= /srv/mail $ cat sieve-before/spam.sieve require "fileinto"; if header :contains "X-Spam-Flag" "YES" { fileinto "Junk"; } P.S. The sieve scripts are all compiled.

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[Dovecot] pigeonhole sieve imapflags bug
by Tim Traver 21 Aug '10

21 Aug '10

Hi all, ok, I just instealled the dovecot 2.0.0 release, and the latest mercurial pigeonhole source. All is well, except for a particular sieve rule that may not be working right. It is a simple rule that looks like this : require ["fileinto","imap4flags"]; # rule:[Past Due Notices] if allof (header :contains "Subject" "Account Past Due Notice") { fileinto "Billing"; setflag "\\Seen"; stop; } Anyways, what happens is the message that matches that rule does indeed get moved to the "Billing" folder, but it does not get marked as read. BUT! if I change the order of the actions to mark it as read first, then move it to the "Billing" folder, it does both of those actions... Is that the way it is supposed to work? or is that a bug? Thanks, Tim.

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[Dovecot] Logged out format in log
by Jerrale G 21 Aug '10

21 Aug '10

I was naive to not check the log more thoroughly for changes. I need "dovecot: imap(jerrale(a)sheltoncomputers.com): Disconnected: Logged out bytes=1921/2983" to say the rip (ip address) as 1.2.x did; how do I accompish such? Jerrale G SC Senior Admin SC Senior Admin

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[Dovecot] Mobile phone client - first access
by Ron Leach 21 Aug '10

21 Aug '10

Ladies and gentlemen, good morning! With my first post to the list, may I begin by saying how impressed I have been by Dovecot's performance on our Debian server. We've configured it to run with Exim and Fetchmail, using Dovecot to manage professional and domestic emails for a small home office, serving a number of Windows and Linux clients both on the internal network and, when working overseas, via SSH tunnels back to the Debian server. Dovecot's performance has been, simply, rock-solid; a very impressive piece of work by Timo and all those supporting him. My ordinary mobile phone - a Sony Ericsson C510 - includes an email client with IMAP capability (and none, TLS, or SSL encryption). Configured to access our server across the mobile carrier's network, the results surprised me; they were not what I expected. The first surprise was, it worked. More seriously, the messages it retrieved were not what I expected; the phone received around 58 messages, but from the 'inbox', the 'junk' box, and a couple from a 'project' box. I had expected to only retrieve the messages that were in the 'inbox'. How does Dovecot 'decide' what messages to give the phone client? [I think I may have the wrong 'mental model' of what should have happened, and would appreciate being put right.] Is it possible to configure Dovecot to only serve specific boxes? The mobile phone client is extremely simple - it does not have the facility to 'browse' the folders, it only has an inbox, sentbox, etc; I have wondered whether there might be a 'jar' email client that is richer, and which might help - I will look for something anyway. But I was impressed that my mobile phone could check our home and office email while offsite; if I can get that working it will save having to fire up the laptop at each opportunity. Thanks very much for reading this far, and, also, thanks everyone who takes the time to contribute to the list, regards, Ron

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[Dovecot] Director mailserver health monitoring script
by Brad Davidson 20 Aug '10

20 Aug '10

Timo et al; The last bit of functionality that the Dovecot director is missing compared to our existing load balancers is mailserver health monitoring. As I understand it, if a mailserver goes down, Dovecot does not take any action to route connections around the offline node, and will keep trying to proxy clients to it. Since we're hoping to cut over to Directors soon, but don't want to lose any functionality, I've hacked up a script that: * Polls the local director for a list of mailservers * Performs health checks against a list of ports on each mailserver * Disables or enables mailservers (by altering the vhost count) as necessary I've published the script on github in hopes that it might be useful to others: http://github.com/brandond/poolmon/ Maybe someday Dovecot will do something like this internally and I won't need the script any more, but for now I'm pretty happy with it. -Brad

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[Dovecot] Weird Problem with subscriptions
by Harry Lachanas 20 Aug '10

20 Aug '10

Dovecot Version 1.2.11 Created Public Namespaces and folders idx and control are created in each users Maildir/ aka namespace public { prefix=Public/ separator = / location = maildir:/home/Public-Folders-Mail/Public-RO:INDEX=~/Maildir/p1-idx:CONTROL=~/Maildir/p1-ctrl hidden = no subscriptions = no inbox = no } The problem occurs after a user has subscribed to The Folder dovecot complaints about ... dovecot: IMAP(grharry): open(/home/grharry/Maildir/p1-idx/.production/dovecot.index.log) failed: Permission denied (euid=1004(grharry) egid=1000(vmail) missing +x perm: /home/grharry/Maildir/p1-idx/.production) After changing manually the perm in the above dir +x all works fine. I've tried unsubscribing and deleting the p1-ctl p1-idx dir structures The same problem occured ( This hapens in the users own Maildir ) Your help will be appreciated Regards Harry

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[Dovecot] Disable APOP challenge in POP3 login greeting
by Brad Davidson 20 Aug '10

20 Aug '10

Timo, It looks like Dovecot 2.0 appends an APOP challenge to the POP3 greeting even if APOP is not an enabled auth mechanism. Is there any way to disable this? We don't support APOP, and the challenge includes the private hostname of the server, which we'd rather not have in the banner. It looks like get_apop_challenge in 1.2 returns NULL if APOP isn't supported, which causes auth_client_ready to omit the banner... but I see no such check (in fact, no way for get_apop_challenge to return NULL) in 2.0, even though pop3_client_send_greeting tests for it. Thanks, -Brad

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[Dovecot] mailbox utilities
by Terry 19 Aug '10

19 Aug '10

Hello, Are there any utilities that will spit out statistics about some mailboxes I have on my server? For example, how many messages are in each mailbox? They appear to be in mbox format (default?). Thanks!

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Re: [Dovecot] mailbox utilities
by Kádár Tamás 19 Aug '10

19 Aug '10

P.S. It's not *exactly* what you are looking for -- but it can still spit you out some useful and semi-related statistics. -----Original Message----- From: "Kádár Tamás" tamas.kadar(a)espell.com Date: Thu, 19 Aug 2010 19:37:01 To: <dovecot(a)dovecot.org> Reply-To: tamas.kadar(a)espell.com Subject: Re: [Dovecot] mailbox utilities If you happen to use Postfix, you can use pflogsumm which is crude, but works. ------Original Message------ From: Terry Sender: dovecot-bounces+tamas.kadar=espell.com(a)dovecot.org To: dovecot(a)dovecot.org Subject: [Dovecot] mailbox utilities Sent: Aug 19, 2010 21:25 Hello, Are there any utilities that will spit out statistics about some mailboxes I have on my server? For example, how many messages are in each mailbox? They appear to be in mbox format (default?). Thanks!

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