- dovecot - dovecot.org

[Dovecot] Dovecot dies, maybe ntpdate related. I'm new to dovecot
by Xavi Montero 28 Jun '10

28 Jun '10

Hi all, my first post. After years with an old server, a couple of months ago I've installed a new one. We use IMAP. After research, I chosed dovecot. It has been running for several weeks but from one week ago or so, it suddently dies about once per day. The only change done in the server one week ago has been to install ntpdate, running once per day in cron-daily. In the cron reports, ntpdate reports a time-jump of 9 seconds each night. We did this because "apparently" we did not a "soft time drift" installing the full ntp daemon, but I start thinking the time-jump crashes dovecot. QUESTIONS: - Might this time-jump cause dovecot to die? - I don't know wehere the dovecot logs are written to. Where do I start searching? Thanks to all! Xavi. -- Xavier Montero - 93 589 71 91 - 630 59 01 62 - xmontero(a)dsitelecom.com

6 6

Re: [Dovecot] managesieve und virtual plugin error v2.0
by Oliver Eales 28 Jun '10

28 Jun '10

Am 28.06.2010 16:01, schrieb Matthias Rieber: > Hi, > > On 28.06.2010 14:36, Oliver Eales wrote: >> Hello, >> i have a problem with the managesieve plugin and a virtual namespace >> in v2.0. >> The managesieve plugin complains about an unknown storage driver >> virtual when i try to log intot the managesieve. I don't know if this >> is quite a recent problem or if it exists for a while, as i >> configured the virtual namspace from scratch. (The virtual namespace >> itself is working.) > maybe you've to add the virtual plugin to protocol managesieve: > > protocol managesieve { > mail_plugins = <other plugins> virtual > } > Thanks, that was the problem! Now it is working. Quite logical when i think about it... :-) Regards, Oliver Eales

2 1

[Dovecot] managesieve und virtual plugin error v2.0
by Oliver Eales 28 Jun '10

28 Jun '10

Hello, i have a problem with the managesieve plugin and a virtual namespace in v2.0. The managesieve plugin complains about an unknown storage driver virtual when i try to log intot the managesieve. I don't know if this is quite a recent problem or if it exists for a while, as i configured the virtual namspace from scratch. (The virtual namespace itself is working.) Jun 28 13:55:54 managesieve-login: Info: Login: user=<1000000000032>, method=PLAIN, rip=::1, lip=::1, mpid=30947, secured Jun 28 13:55:54 managesieve: Debug: Added userdb setting: plugin/quota_rule=*:storage=1073741824B Jun 28 13:55:54 managesieve(1000000000032): Debug: Effective uid=20001, gid=20001, home=/mail/001/32/00/00/1000000000032 Jun 28 13:55:54 managesieve(1000000000032): Debug: Namespace type=private: type=private, prefix=, sep=., inbox=yes, hidden=no, list=ye s, subscriptions=yes Jun 28 13:55:54 managesieve(1000000000032): Debug: fs: root=/mail/001/32/00/00/1000000000032-dbox, index=/mail/001/32/00/00/1000000000 032-dbox/index, control=, inbox= Jun 28 13:55:54 managesieve(1000000000032): Debug: Namespace : type=private, prefix=virtual., sep=., inbox=no, hidden=no, list=yes, su bscriptions=yes Jun 28 13:55:54 managesieve(1000000000032): Error: user 1000000000032: Initialization failed: Namespace 'virtual.': Unknown mail stora ge driver virtual Jun 28 13:55:54 managesieve(1000000000032): Error: Invalid user settings. Refer to server log for more information. I am using dovecot-2.0-pigeonhole 1301:1def8519d775 and dovecot-2.0 11638:5326d6b2f36e excerpt from confs: protocols = imap pop3 lmtp sieve mail_location = dbox:%h-dbox:INDEX=%h-dbox/index namespace type=private { separator = . prefix = inbox = yes } namespace { prefix = virtual. separator = . location = virtual:%h-dbox/virtual:INDEX=%h-dbox/index/virtual } service managesieve-login { inet_listener managesieve { } } Regards, Oliver Eales

1 0

[Dovecot] "forgot my password" feature
by Mustafa Cagatayli 28 Jun '10

28 Jun '10

Hi, We have a mail server with the postfix/Squirrelmail/Dovecot(v.1.1.11) combination which we have user data on MySQL as virtual users. We have configured the SquirrelMail interface so that users can now change their own passwords. Is there any opensource solution to provide "self service password management" which would allow us to add the "I forgot my password. Lets reset it" feature which would do the authentication with the help of some random personal data or personal question/answer combination ? Regards. -- Mustafa Çağataylı BİM

1 0

[Dovecot] SASL EXTERNAL docs?
by Patrick Ben Koetter 28 Jun '10

28 Jun '10

The wiki says Dovecot supports SASL EXTERNAL as of version 1.2. I couldn't find any documentation telling me how I would configure SASL EXTERNAL. Is there any? p@rick -- state of mind Digitale Kommunikation http://www.state-of-mind.de Franziskanerstraße 15 Telefon +49 89 3090 4664 81669 München Telefax +49 89 3090 4666 Amtsgericht München Partnerschaftsregister PR 563

2 1

[Dovecot] importing outlook express messages to dovecot imap server
by Angelo Chen 26 Jun '10

26 Jun '10

Hi, I have a local Dovecot 1.1.4 running. I have a big number of outlook express messages that I like to put into Maildir so that I can use Dovecot's imap to access. I can convert them into mbox format. any available means for me to import outlook express/mbox messages into Maildir/Dovecot? command line will be preferred, Thanks, Angelo

8 20

Re: [Dovecot] dovecot evaluation on a 30 gb mailbox
by Eric Shubert 26 Jun '10

26 Jun '10

Rajesh M wrote: >> Rajesh M wrote: >>>> Rajesh M wrote: >>>>> eric >>>>> >>>>> i studied LDA a bit >>>> > >>>>> if i use lda that means all my 5000+ users' email index files will be >>>>> continuously updated when every email arrives -- means a lot of writes >>>>> to >>>>> disk ... is that correct ? >>>> Yes, but I think you make it sound worse than it is. Updating the index >>>> as each email arrives doesn't involve rebuilding the whole index like >>>> what happens at login. It only updates what's there instead of >>>> rebuilding the whole thing. I can't speak from experience, but I expect >>>> that it's very efficient, and you'll never notice any increased load on >>>> the machine. Perhaps the equivalent of adding journaling to a >>>> filesystem. You can ask the dovecot list to verify this. >>>> >>>> Also, it just occurred to me that if you're using ext3, you should be >>>> sure to optimize the filesystem. Off hand, I'd use the noatime and >>>> nodiratime mount options (man mount) and dir_index filesystem option >>>> (man tune2fs). >>>> >>>>> if yes then i dont want that since only around 200 or so people out of >>>>> the >>>>> above 5000 use webmail. >>>> Just to be clear, it affects all imap usage, not only webmail (although >>>> your uses may not use imap other than webmail). >>>> >>>>> i will study a some more and revert >>>> I hope you can figure a way to try this out. I expect that QMT's move >>>> to >>>> dovecot in the future will include the deliver LDA, and your work here >>>> will be a big help getting us there. >>>> >>>> Let me know if I can be of any further help. >>>> >>>> -- >>>> -Eric 'shubes' >>>> >>> >>> hi eric >>> >>> few questions >>> >>> i wil enable lda exclusively for this one 30 gb email box using .qmail >>> file see the performance improvement .. is that ok ? >> I believe that would be fine. >> >>> can i safely enable atime for this user maildir ? >> Sure. That's simply a performance consideration. I don't believe that >> atime is used for much of anything, so either atime or noatime is safe. >> noatime is just a little faster because the inode (where that piece of >> information is stored) doesn't need to be updated each time a file is >> accessed. >> >>> thanks for your help >> Sure. I'm eager to see your results. >> >> -- >> -Eric 'shubes' >> > > > hi eric > > this is what i plan to do > > as per > http://wiki.dovecot.org/LDA/Qmail > > i need to enter the following line in a .qmail file under the Maildir > directory of the user > |/var/qmail/bin/preline -f /usr/local/libexec/dovecot/deliver -d $EXT@$USER the location is /usr/libexec/dovecot/deliver on my system. > i would add an email forward using qmailadmin web interface (which creates > the .qmail file) and then manually edit the .qmail file and put the above > line in it (so that ownership and permissions are taken care off) That sounds ok. The permissions/ownership I'm seeing on .qmail files is: -rw------- 1 vpopmail vchkpw 101 Mar 26 2008 .qmail > now i would also need to edit the dovecot.conf file > could you guide me on what changes do i need to dovecot.conf file ? Others on this list would be more help than me regarding this. From the looks of it though (after browsing the dovecot.conf file, which is well documented btw) I don't think you'd need to change a thing. We'll certainly find out if that's the case or not. I'd just give it a go. Perhaps on a test account initially. ;) -- -Eric 'shubes'

2 1

[Dovecot] Pigeonhole Managesieve issue with Dovecot 2.0
by Tim Traver 26 Jun '10

26 Jun '10

Hi all, ok, I am running version v2.0.beta6 and the latest pigeonhole build to run managesieve and the sieve delivery filters... I am getting the following response from the managesieve port when connecting : Escape character is '^]'. "IMPLEMENTATION" "Dovecot" "SIEVE" "" "SASL" "PLAIN" "STARTTLS" "VERSION" "1.0" OK "Dovecot ready." But, I think that the SIEVE line is suppose to have all of the supported sieve functions like so : "SIEVE" "comparator-i;ascii-numeric fileinto reject vacation imapflags notify include envelope body relational regex subaddress copy" I modified the dovecot sieve config file to try and add (although they should all be added by default), and it still comes up blank... Am I missing something? what might cause it to not broadcast the sieve implementations that it has? Thanks, Tim.

2 2

[Dovecot] auth_cache_size
by Daniel L. Miller 25 Jun '10

25 Jun '10

I was going to ask how much space I should allocate for auth_cache_size - but decided to read the wiki first. Now I'll be more specific - Wiki says about 50 bytes per passdb, and up to 200 bytes for userdb - so my arithmetic says each combined entry needs 250 bytes budgeted. Assuming that's correct, I need some clarification. Let's start small. Assume ten users, all connected - and everybody also likes looking at everybody else's mailbox. So there are ten clients, each with at least ten connections (I say at least because each folder viewed within an account is its own connection, right?). How is the auth_cache used? If I have ten user/pass combinations - is that all that is stored? Or are there connection-specific entries as well? In other words, for the above example, do I have 10 x 250 bytes yields auth_cache_size=3, or do I need 10 x 10 x 250 yields auth_cache_size=30 - or am I totally off? -- Daniel

2 1

Re: [Dovecot] dovecot evaluation on a 30 gb mailbox
by Rajesh M 25 Jun '10

25 Jun '10

> Rajesh M wrote: >>> Rajesh M wrote: >>>> eric >>>> >>>> i studied LDA a bit >>> > >>>> if i use lda that means all my 5000+ users' email index files will be >>>> continuously updated when every email arrives -- means a lot of writes >>>> to >>>> disk ... is that correct ? >>> Yes, but I think you make it sound worse than it is. Updating the index >>> as each email arrives doesn't involve rebuilding the whole index like >>> what happens at login. It only updates what's there instead of >>> rebuilding the whole thing. I can't speak from experience, but I expect >>> that it's very efficient, and you'll never notice any increased load on >>> the machine. Perhaps the equivalent of adding journaling to a >>> filesystem. You can ask the dovecot list to verify this. >>> >>> Also, it just occurred to me that if you're using ext3, you should be >>> sure to optimize the filesystem. Off hand, I'd use the noatime and >>> nodiratime mount options (man mount) and dir_index filesystem option >>> (man tune2fs). >>> >>>> if yes then i dont want that since only around 200 or so people out of >>>> the >>>> above 5000 use webmail. >>> Just to be clear, it affects all imap usage, not only webmail (although >>> your uses may not use imap other than webmail). >>> >>>> i will study a some more and revert >>> I hope you can figure a way to try this out. I expect that QMT's move >>> to >>> dovecot in the future will include the deliver LDA, and your work here >>> will be a big help getting us there. >>> >>> Let me know if I can be of any further help. >>> >>> -- >>> -Eric 'shubes' >>> >> >> >> hi eric >> >> few questions >> >> i wil enable lda exclusively for this one 30 gb email box using .qmail >> file see the performance improvement .. is that ok ? > > I believe that would be fine. > >> can i safely enable atime for this user maildir ? > > Sure. That's simply a performance consideration. I don't believe that > atime is used for much of anything, so either atime or noatime is safe. > noatime is just a little faster because the inode (where that piece of > information is stored) doesn't need to be updated each time a file is > accessed. > >> thanks for your help > > Sure. I'm eager to see your results. > > -- > -Eric 'shubes' > hi eric this is what i plan to do as per http://wiki.dovecot.org/LDA/Qmail i need to enter the following line in a .qmail file under the Maildir directory of the user |/var/qmail/bin/preline -f /usr/local/libexec/dovecot/deliver -d $EXT@$USER i would add an email forward using qmailadmin web interface (which creates the .qmail file) and then manually edit the .qmail file and put the above line in it (so that ownership and permissions are taken care off) now i would also need to edit the dovecot.conf file could you guide me on what changes do i need to dovecot.conf file ? rajesh

1 0