- dovecot - dovecot.org

[Dovecot] Access filesystem (NFS) as some user
by Mihamina Rakotomandimby 05 May '10

05 May '10

Manao ahoana, Hello, Bonjour, My Dovecot server has to access the users Maildirs. Maildirs are on a NFS mount that only a user (vmail/500) may read and write. No one else. How to configure Dovecot so that at least disk read-write are performed as a "vmail" user (that I have created with the right attributes)? Is the workaround of changing dovecot's system UID/GID a not-so-bad one? (I am trying to see if it works, at least...) Misaotra, Thanks, Merci. -- Architecte Informatique chez Blueline/Gulfsat: Administration Systeme, Recherche & Developpement +261 34 29 155 34 / +261 33 11 207 36

2 3

Re: [Dovecot] Dovecot deliver LDA problem
by Noel Butler 05 May '10

05 May '10

bugger sent that direct, please send that output to the list :) On Wed, 2010-05-05 at 09:04 +1000, Noel Butler wrote: > Alex, > > Please show the output of dovecot -n > > > On Tue, 2010-05-04 at 15:23 -0700, Alex wrote: > > > Thanks for the hint. > > > > I enabled 'socket listen' it in dovecot.conf as you pointed it out. > > > > Now dovecot.err log has these error messages: > > > > May 04 14:57:19 deliver(user1(a)some_domain.com): Error: User > > user1(a)some_domain.com is missing UID (set mail_uid) > > May 04 14:57:19 deliver(user2(a)some_domain.com): Error: User > > user2(a)some_domain.com is missing UID (set mail_uid) > > May 04 14:57:25 deliver(user3(a)some_domain.com): Error: User > > user3(a)some_domain.com is missing UID (set mail_uid) > > > > > > I tried to set necessary mail_uid in dovecot-sql.conf in user_query: > > > > user_query = SELECT maildir as mail, 51 as userdb_uid, 51 as > > userdb_gid, > > 51 as mail_uid FROM dovecot_email_maps WHERE email = '%u' > > > >

2 2

[Dovecot] Dovecot deliver LDA problem
by Alex 05 May '10

05 May '10

Hello folks, I was trying to set up Dovecot deliver LDA instead of Postfix default virtual LDA In Postfix main.cf I specified: virtual_transport = dovecot dovecot_destination_recipient_limit = 1 In Postfix master.cf I entered: dovecot unix - n n - - pipe user=mailer flags=DRhu argv=/usr/local/mail/libexec/dovecot/deliver -f ${sender} -d ${recipient} In Dovecot dovecot.conf I have the following entries: passdb sql { args = /etc/dovecot/dovecot-sql.conf } userdb prefetch { } userdb sql { args = /etc/dovecot/dovecot-sql.conf } In Dovecot dovecot-sql.conf I have this: user_query = SELECT maildir as mail FROM dovecot_email_maps WHERE email = '%u' password_query = SELECT user, password, userdb_uid, userdb_gid, userdb_home, userdb_mail FROM dovecot_user_maps WHERE user = '%n' After reloading postfix and restarting dovecot I'm getting this type of warnings in dovecot.err log: May 04 10:43:10 deliver(some_address(a)some_domain.com): Error: userdb lookup: connect(/var/run/dovecot//auth-master) failed: No such file or directory Could somebody please help me to resolve this mistery. What am I missing ether in configuration file or somewhere else? Many thanks in advance, Alex

2 2

[Dovecot] CDB Authentication database
by Luca Corti 04 May '10

04 May '10

Hello, I'd be interested in seeing a CDB based backend for the userdb/passdb lookups. Is anyone working on this? Is there any documentation (other than the wiki Design section and the code itself) on implementing database backends? thanks Luca

5 5

[Dovecot] Dovecot antispam plugin with virtual users
by Philipp 04 May '10

04 May '10

Hi, I'm running dovecot 1.2.11 with the antispam plugin 1.2+20090702-1+b1 installed from the debian repos (squeeze) and dspam 3.9.0+git20100416-1. Unfortunately this doesn't seem to work well with my virtual users, stored on a local openldap server: While sending mail manually to dspam does work, there's some trouble when trying to use the antispam plugin. I tried using both sendmail (exim4 in my case) and configuring antispam_mail_sendmail = /usr/bin/dspam to point to dspam, with similar results: exim: [15042] Failed to get user name for uid 5001 dspam: dspam[18961]: Unable to determine the runtime user both errors are reproducible by running exim/dspam with sudo -u \#5001 with 5001 being the virtual uid used of the user that is logged in through imap. Of course the uid 5001 is invalid for the rest of the system, so it can't run anything, but as far as I can tell the plugin uses this uid to call the respective programs :\ Now I was wondering if it was possible to keep the plugin from using the imap-uid and instead specifying one elsewhere? I guess this would be of fairly great interest for everyone using virtual users, be it ldap or anything else. Or is there a different way to do this? Do I maybe just miss setting a variable somewhere? Philipp

2 1

[Dovecot] dovecot user
by Timo Sirainen 04 May '10

04 May '10

Any thoughts on this: The primary use for "dovecot" user has been for login processes. But people keep misunderstanding this and try to use dovecot for accessing mails. For years I've been wondering about renaming this user to something else like dovelogin, but it never really seemed practical. So now with v2.0 there are a bunch of new processes, and for example anvil and dict are now run as dovecot user by default. But it's not really good that login processes can just go and kill those processes. And even worse, if drop_priv_before_exec=yes they could ptrace these processes. So I think we need two Dovecot users for v2.0: 1. Completely untrusted user for login processes. 2. Slightly more trusted internal Dovecot user. So "dovecot" could be reused for 2. And it would no longer be a mortal sin to use dovecot user for owning mail files. For 1. there would be a new user. I'd use "dovelogin", but apparently tools still don't much like usernames that are longer than 8 characters. Like ps could show numeric uid instead of 9 character long username. So .. any suggestions? "dovlogin" could be one possibility I guess. It would be nice if the name somehow reminded of login processes, but maybe something else could be used too, like: dovenil, dovenull, dovezero, dovenone, dovevoid, doveint, dovedown, dovein, dove0

17 33

[Dovecot] Dovecot SQL user_query
by Alex 04 May '10

04 May '10

Hello folkz, Is it possible to setup in dovecot-sql.conf file to run user_query twice if its first run didn't yield any values. And likewise don't proceed with the second run if the first user_query execution produced the result. I have to query two tables which specify there email messages shall be delivered via Dovecot deliver LDA depending on the incoming email addresses. Please don't question me about this setup. I inherited this mess from the previous Network Admin. First query should be ran like this: user_query = SELECT concat('maildir:/data/mail/',maildir) as mail FROM folders WHERE email = '%u' If the first query doesn't yield any result the second shall be ran like this: user_query = SELECT maildir as home FROM users WHERE email = '%u' Please advise if such user_query setup is possible at all. Thanks in advance, Alex

5 4

[Dovecot] exit codes for 'sievec'
by Jerry 04 May '10

04 May '10

As far as I can tell, 'sievec' always exits with '0' whether there is an error or not. If that is correct, I believe it should be modified to exit with some other code if the conversion and writing of the new file are not completed successfully. I have written a few script files and a 'make' file specifically for sievec. The inability to get an accurate exit code is problematic for me. -- Jerry Dovecot.user(a)seibercom.net Disclaimer: off-list followups get on-list replies or get ignored. Please do not ignore the Reply-To header. __________________________________________________________________ Fortune's Fictitious Country Song Title of the Week: "How Can I Miss You if You Won't Go Away?"

2 2

[Dovecot] zlib Plugin Dovecot 2.0 - ostream
by Alex Baule 03 May '10

03 May '10

Hello Everyone... In zlib save mail have it: struct ostream *output; There is a way to get the file descriptor from output used in ostream zlib plugin ? to get in istream is i_stream_get_fd, but don't have o_stream_get_fd......

2 6

[Dovecot] Dovecot Vs Procmail LDA
by Wilberth Pérez 03 May '10

03 May '10

Hi everyone: Anyone knows what are the differences (or advantages and disadvantages) between Dovecot LDA with postfix Vs. Procmail LDA with postfix ? -- -------------------------------------------------------- LCC Wilberth de Jesús Pérez Segura CCSA- Administración de Servicios y Seguridad de las TI Correo: wilberth.perez(a)uady.mx Universidad Autónoma de Yucatán Secretaría General Coordinación Administrativa de Tecnologías de Información RIUADY C-59 x Av. Itzáes (999)923-74-28 Ext. 1117 Mérida, Yucatán, México 2010 --------------------------------------------------------

1 0