- dovecot - dovecot.org

[Dovecot] outgoing mails
by Ing. Hugo Ruiz de Huidobro 25 Mar '10

25 Mar '10

Hello, I need to restrict outgoing email. I am using RedHat CentOS 4.7 and Dovecot 0.99.11 Today all users can send emails to Internet. But some people should only be able to send email to other user in this mail server. Just a few persons can send emails to the Internet. How can I do that? THANKS! Hugo

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[Dovecot] Dovecot 2.0beta4
by Renaud Allard 25 Mar '10

25 Mar '10

Hello, It seems dovecot 2.0 beta4 still behave strangely without tcpwrap. I still get the errors: 2010-03-25_17:26:59.33848 Fatal: service(tcpwrap) access(/opt/dovecot/libexec/dovecot/tcpwrap) failed: No such file or directory 2010-03-25_17:27:00.36108 Fatal: service(tcpwrap) access(/opt/dovecot/libexec/dovecot/tcpwrap) failed: Permission denied It's easy to solve by touching and chmodding 0755 that file, but prod version shouldn't exhibit that behavior. Best Regards

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[Dovecot] 1.2.11 nfs_flush_file_handle_cache_dir problems
by Ade Fewings 25 Mar '10

25 Mar '10

Hi chaps We're using the mbox_snarf plugin to snarf mail from /var/mail/%U to ~%U/Mail/inbox and using dotlocking on all accesses. This is on Solaris with NFS mounted home directories. We're getting a few (very few) of these for just a couple of users: Error: nfs_flush_file_handle_cache_dir: rmdir(/var/mail) failed: Device busy Which, having searched, I see some discussion of in the past, but not with 1.2. We're using: mail_privileged_group = mail For the /var/mail 'inboxes', which I thought would tackle this problem. Couple of questions, if you don't mind: 1. Does dovecot user need to be a member of the mail group? 2. Does this error message represent a real problem that needs solving? It's very strange how rare it is and that only a few select users have encountered. Full dovecot.conf below: > # 1.2.11: /usr/local/dovecot-1.2.11-b/etc/dovecot.conf > # OS: SunOS 5.10 sun4v > log_path: /usr/local/dovecot/var/dovecot.log > protocols: imap imaps pop3 pop3s > listen(default): *:143 *:10143 *:20143 *:30143 *:40143 *:50143 > listen(imap): *:143 *:10143 *:20143 *:30143 *:40143 *:50143 > listen(pop3): *:110 > ssl_listen(default): *:993 *:10993 > ssl_listen(imap): *:993 *:10993 > ssl_listen(pop3): *:995 > ssl: no > ssl_cipher_list: MEDIUM:!LOW > disable_plaintext_auth: no > shutdown_clients: no > login_dir: /usr/local/dovecot-1.2.11-b/var/run/dovecot/login > login_executable(default): > /usr/local/dovecot-1.2.11-b/libexec/dovecot/imap-login > login_executable(imap): > /usr/local/dovecot-1.2.11-b/libexec/dovecot/imap-login > login_executable(pop3): > /usr/local/dovecot-1.2.11-b/libexec/dovecot/pop3-login > max_mail_processes: 1024 > verbose_proctitle: yes > mail_privileged_group: mail > mail_location: mbox:~/Mail:INBOX=/var/mail/%u > mail_debug: yes > mmap_disable: yes > mail_nfs_storage: yes > mail_nfs_index: yes > lock_method: dotlock > mbox_read_locks: dotlock > mbox_write_locks: dotlock > mail_executable(default): /usr/local/dovecot-1.2.11-b/libexec/dovecot/imap > mail_executable(imap): /usr/local/dovecot-1.2.11-b/libexec/dovecot/imap > mail_executable(pop3): /usr/local/dovecot-1.2.11-b/libexec/dovecot/pop3 > mail_plugins: mbox_snarf > mail_plugin_dir(default): /usr/local/dovecot-1.2.11-b/lib/dovecot/imap > mail_plugin_dir(imap): /usr/local/dovecot-1.2.11-b/lib/dovecot/imap > mail_plugin_dir(pop3): /usr/local/dovecot-1.2.11-b/lib/dovecot/pop3 > auth default: > verbose: yes > debug: yes > passdb: > driver: pam > passdb: > driver: passwd > args: blocking=yes > userdb: > driver: passwd > args: blocking=yes > plugin: > mbox_snarf: ~/Mail/inbox Much appreciate your time, it has made an amazing difference here, I'm just seeking absolute perfection I think (well, mbox perfection anyway). ~~ Ade -- Centre for Advanced Software Technology Limited is a limited company registered in England and Wales. Postal Address: C.A.S.T. Limited, Technium CAST, Ffordd Penlan, Parc Menai, Bangor, Gwynedd. LL57 4HJ. Registered Number: 04473521. Registered Office: Finance Office, Bangor University, College Road, Bangor, Gwynedd. LL57 2DG. www.techniumcast.com

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[Dovecot] Dovecot-1.2 + Sieve + Managesieve on Debian
by Proskurin Kirill 25 Mar '10

25 Mar '10

Hello! I think about migrate from FreeBSD to Linux because I need DRBD for clustering. I want to use Debian Lenny but run on some problems. I want near latest Dovecot packages. Native repos are too old. Backports seems to don`t have a Sieve&Managesieve support and we need it(am I wrong?). Stephan Bosch auto packeges is not for production. How could I solve this without make own packages? What Debian folk`s do in this situation? P.S. I don`t want to use RedHat like OS because I not familiar with it. -- Best regards, Proskurin Kirill

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[Dovecot] can Dovecot do VERP?
by Rick Graves 25 Mar '10

25 Mar '10

Hey, I have several thousand email addresses, the vast majority of which are definitely no good, and I want to figure out which are good. So I will send out an email to all the email addresses. By making a list of the ones that bounced, and comparing that list with the full list, I can determine which are still good. This is for a non-profit association -- I am not in the spam business. Knowing exactly which emails bounced would be much easier if I could set up an in box implementing VERP. http://en.wikipedia.org/wiki/Variable_envelope_return_path In other words, I want an in box accepting all mail where the email addresses match a wildcard pattern like this: mail_admin_??????(a)domain.org, where ?????? are 6 digits. The digits would be a scrambled contact ID. Since they will be digits only, here is the regular expression: mail_admin_\d{6}. (We will pick a wildcard pattern that does not conflict with any existing address on the server.) Sending the outgoing emails, each with a different "From" address matching the wildcard pattern, is not a problem -- I have a working python script for this. The challenge is getting one in box to accept emails with different "From" addresses (matching the wildcard pattern). We are running IMAP server Dovecot 1.0.7. How do I set this up in the IMAP server to accept emails to addresses matching the wildcard pattern? Thanks, Rick Graves

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Re: [Dovecot] quota dict with mysql 4.0
by Andre Hübner 25 Mar '10

25 Mar '10

(sorry, i only read the digest version of list and always create i new thread by "fake-Re") Hello, >> Perhaps you can implement some updating procedure that >> would only involve a percentage of your users at one time. no way, i want to fix this! but i need help because i have no idea of c-programming. i can read the code a little bit, but never lerned it. solution is to edit dovecot-1.2.11/src/lib-dict/dict-sql.c i can avoid using ON DUPLICATE KEY UPDATE by changing line 91 to: orig: dict->has_on_duplicate_key = strcmp(driver->name, "mysql") == 0; changed: dict->has_on_duplicate_key = strcmp(driver->name, "mysqlXXX") == 0; this works only 50%. if a user has no entry in quotatable, dovecot is updating his quota with 2 queries: INSERT INTO quota (bytes,username) VALUES ('2456','myuser') INSERT INTO quota (messages,username) VALUES ('2','myuser') The first query works, the second throws an error because username-field is uniqe. Duplicate entry 'myuser' for key 1 So i have to find a way to make this query in one step: INSERT INTO quota (bytes,messages, username) VALUES ('2456','2','myuser') or turn the second insert into an update update quota SET messages='2' where username='myuser' But iam afraid this is too much for my c-skills. I need help of an C-Crack or timo as developer. if timo could create a switch for mysql 4.0 would surely be the best. Thanks, Andre

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Re: [Dovecot] quota dict with mysql 4.0
by Andre Hübner 25 Mar '10

25 Mar '10

Hello, >> I am somewhat surprised that the older software is not compatible with >> the newer version of MySQL. Usually, it is the other way around. Have >> you checked to see if newer versions of the incompatible software >> exist? I would be willing to wager that they have been updated to >> accommodate the newer MySQL versions. Syntax changed a litte bit and also there are some new protected words which are used by older software in sql without backticks etc. I agree updating would be the better way but we talking about a big number of servers and customers still using it. this is not changed over night.... I looked into dovecot-1.2.11/src/lib-dict/dict-sql.c, there seems to be a check for "ON DUPLICATE KEY UPDATE" on line 588. I recompiled dovecot on mysql 4.0 machine and tried again but there was no change. SQL is successful when dataset in quotatable is existing. in this case dovecot triggers an update of the data. But if no line for user is existing in quotatable and an insert is needed there is still the error: sql dict: commit failed: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'ON DUPLICATE KEY UPDATE bytes='12525'' at line why is the mysql 4.0-recompiled dovecot thinking my mysql is able to do "ON DUPLICATE KEY UPDATE"? How to avoid this? Thanks, Andre

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[Dovecot] What is the difference between the plugin zlib and imap-zlib ?
by Alex Baule 24 Mar '10

24 Mar '10

What is the difference between the plugin zlib and imap-zlib ? in dovecot 1.2.X the zlib plugin works with imap....imap-zlib is a complement to zlib ?

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[Dovecot] Question howto wiki.dovecot.org about quotas using dict
by Ricardo Barbosa 24 Mar '10

24 Mar '10

Hi, I am configuring a server with postfix and dovecot with virtual domains and using quota. To implement quota followed the documentation of the link http://wiki.dovecot.org/Quota/Dict, did not understand what you mean the field "where_field = path" would be the path on the filesystem of your mailbox? I would have to create the table that he says in the documentation or can I force a value with concat and using the AS (ie select '/var/vmail/domain/user' as path from table) ? Regards. __________________________________________________ Faça ligações para outros computadores com o novo Yahoo! Messenger http://br.beta.messenger.yahoo.com/

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[Dovecot] Is it possible to prevent users from ever deleting anything?
by Snaky Love 24 Mar '10

24 Mar '10

Hi, dear dovecot-users, is it possible to make dovecot ignore the DELETE command for some accounts? Basically what I want to achieve is: users shall not be able to delete their emails - but they still should be able write emails. This is meant for a setup where different users are sending and receiving emails for a "support" account. I looked into IMAP virtual folders and ACL but I did not see a way of totally disabling the possibility to delete emails and share the whole account. I realize there may be race conditions with a setup like this and a web based ticket system might be a better solution, but it is only a very small team and we can always talk to each others to resolve conflicts - so using only one mail account for support seems practical and could keep the overhead small - but we do not want to delete anything from it (accidentaly). Of course, at one point in future somebody has to delete some mails from this accounts to get rid of old stuff - so I would like to implement a super-user that is able to do that kind of mailbox maintanance. How would I use ACL to setup such a scenario? Is it even possible? Or did I misunderstand IMAP shared folders completely??? Thank you very much for your attention! Have a nice day, Snaky

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