- dovecot - dovecot.org

[Dovecot] Refilter Mailboxes via Sieve - Missing delivered-to header
by Dieter Knopf 12 Jan '11

12 Jan '11

Hello, i already read http://wiki.dovecot.org/HowTo/RefilterMail but it won't work here :( I have many old mails in my folders and need to refilter many of them. But there are many mails without a delivered-to-header. What can i do? Error: Configuration error: envelope_recipient specified header missing (delivered-to:1) Would be okay if getmail would just skip the mail, but it cancels. Not sure if there is any way around. This is the config: [retriever] type = MultidropIMAPSSLRetriever envelope_recipient = delivered-to:1 server = foo port = 993 username = foo password = foo mailboxes = ("INBOX.REFILTER",) move_on_delete = INBOX.trash [destination] type = MDA_external path = /usr/lib/dovecot/deliver arguments = ("-e", "-f", "%(sender)", "-d", "%(recipient)") user = vmail group = vmail [options] delete = true recieved = false delivered_to = false verbose = 2 I'm using virtual users, so i must use Multidrop. Thanks

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[Dovecot] Connection queue full on my directors
by Jan-Frode Myklebust 11 Jan '11

11 Jan '11

I finally upgraded to v1.2.16 on my backend servers, with ldap instead of previously mysql, and put a couple of dovecot v2.0.8 directors in front of them (used haproxy previously). It seemed to work OK initially, but after a few hours we got bit by "Connection queue full" problems on the directors. So I now set default_process_limit=512 and also: service anvil { client_limit=1027 } since dovecot said that was now required. Things seems to be working, but I'm afraid default_process_limit=512 is too low: $ ps -ef|grep dovecot/pop3-login|wc -l 192 $ ps -ef|grep dovecot/imap-login|wc -l 472 so looks like I'm quite close to hitting this limit for my imap logins. We will eventually put up some webmail servers (using imapproxy to keep connections alive), that will be connecting over these directors. Then we will expect to have a lot more active imap sessions over these directors. Should we just keep increasing default_process_limit, or per service process_limit, and follow dovecots warnings about client_limits for auth/anvil.. or will we be getting into other problems like running out of file descriptors? Are there any max'es we should expect to run into ? Current director config: ################################################################### $ ../../sbin/dovecot -n # 2.0.8: /usr/local/dovecot-2.0.8/etc/dovecot/dovecot.conf # OS: Linux 2.6.18-194.32.1.el5 x86_64 Red Hat Enterprise Linux Server release 5.5 (Tikanga) default_process_limit = 256 director_mail_servers = 192.168.42.7 192.168.42.8 192.168.42.9 192.168.42.10 192.168.42.11 192.168.42.28 192.168.42.29 director_servers = 192.168.42.15 192.168.42.17 disable_plaintext_auth = no listen = * passdb { args = proxy=y nopassword=y driver = static } service director { fifo_listener login/proxy-notify { mode = 0666 } inet_listener { port = 5515 } unix_listener director-userdb { mode = 0600 } unix_listener login/director { mode = 0666 } } service imap-login { executable = imap-login director } service pop3-login { executable = pop3-login director } ssl_cert = </etc/pki/tls/certs/mail.example.net.crt ssl_key = </etc/pki/tls/private/mail.example.net.key ################################################################### $ sudo /usr/local/dovecot/bin/doveadm director status mail server ip vhosts users 192.168.42.7 10 315 192.168.42.8 10 292 192.168.42.9 10 311 192.168.42.10 10 316 192.168.42.11 10 292 192.168.42.28 100 1790 192.168.42.29 100 1787 -jf

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[Dovecot] Dovecot - AllowGroups option
by Jacob Neergaard Pedersen 11 Jan '11

11 Jan '11

Hi, I'm trying to control access to different services on an Debian server using /etc/group. So that a user I create for FTP usage doesn't fill up my server with IMAP folders or samba garbage. Services like proftpd have: "AllowGroup ftpgroup" sshd have "AllowGroups sshgroup" And samba have "valid users = @smbgroup" But I can't find the correct option in Dovecot (/etc/dovecot/dovecot.conf) Do anyone have the magic option or a workaround thats doesn't envolve maintaining seperate user databases and password? (I know its needed for samba but besides that) /Neergaard

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[Dovecot] utility to copy/sync IMAP mailboxes
by Don Buchholz 11 Jan '11

11 Jan '11

Well, my Dovecot server (v2.0.8) is up and running, and now it's time to migrate mailboxes from the old mail server [Lotus Domino Release 5.0.8] running on Windows NT 4.0 [ancient -- been the mail server since Aug-2000]. I saw "dsync(1)" and thought my troubles were over. Only I can't figure out how to make it work with the NT/Domino server as a source for mailboxes. I guess dsync(1) works only in completely *nix environment. I've been trying the imapcopy.pl script from the IMAP Tools web page (http://www.athensfbc.com/imap_tools/) but it is having problems with Notes' choice of the backslash (\) character as a mailbox (namespace?) delimiter. Any suggestions for a stable, reliable (copy/duplicate/mirror/sync) tool that can do the job using only IMAP access? (No SSL support required.) Thanks in advance, - Don

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[Dovecot] Max number of mail processes
by Patrick Nudo 11 Jan '11

11 Jan '11

Dovecot version 1.1.11. Error: Maximum number of mail processes exceeded (see max_mail_processes setting). I can't seem to get rid of these errors. I get batches of these errors about 4 or 5 times a day. I have a cron-job checking for the existence of this error and then I reboot dovecot when I see this error, but what is causing this error ? What I am reading on the Internet about this particular issue has not helped to resolve the issue. I would really like to know how many mail processes it thinks that it is using at any one instant in time. Is this possible ? Maybe then I can track the reason for the error.

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[Dovecot] enforce STARTTLS on port 110 with POP3?
by Zhou, Yan 11 Jan '11

11 Jan '11

Hi there, We are using DoveCot 1.0.7. User will use POP3 or POP. We want to force user to securely send their credential and keep a secure connection between us and them. We can do TLS/SSL on port 995, or STARTTLS on port 110. The problem is that we have no way to enforce STARTTLS on 110, user can connect to DoveCot on port 110, sending user credential without STARTTLS (thus insecure). Reading DoveCot documentation does not sound it supports this. Here is what I got from documentation. Dovecot supports: * IMAP (including TLS/STARTTLS) * IMAP+SSL ("imaps") * POP3 (including TLS/STLS) * POP3+SSL ("pops") My only option to enforce securely sending user credential is to enable port 995 and disable port 110, sound right? Thanks, Yan Confidentiality Notice: The information contained in this electronic transmission is confidential and may be legally privileged. It is intended only for the addressee(s) named above. If you are not an intended recipient, be aware that any disclosure, copying, distribution or use of the information contained in this transmission is prohibited and may be unlawful. If you have received this transmission in error, please notify us by telephone (513) 229-5500 or by email (postmaster(a)MedPlus.com) After replying, please erase it from your computer system.

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[Dovecot] Multiple Authentication Databases
by Jonathan Tripathy 11 Jan '11

11 Jan '11

Hi Everyone, I wish to run Dovecot on my "Front End" outbound mail relay, and use Dovecot purely for authentication purposes. However, each mysql database for each domain will be on a separate server. Is there a way for dovecot to authenticate against different databases depending on domain name? Thanks

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[Dovecot] Multiple Authentication Databases
by Jonathan Tripathy 11 Jan '11

11 Jan '11

Hi Everyone, I wish to run Dovecot on my "Front End" outbound mail relay, and use Dovecot purely for authentication purposes. However, each mysql database for each domain will be on a separate server. Is there a way for dovecot to authenticate against different databases depending on domain name? Thanks

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[Dovecot] OS X Server Partition Problems
by Bryan Harrison 11 Jan '11

11 Jan '11

I'm a nube to Dovecot and this list. Please be kind. ;) I'm running Dovecot 1.1.20 and Postfix 2.5.5 on OS X Server 10.6.6. I've moved accounts from another, older cyrus-based server (thank god), and used fetchmail to imap the existing mail to the new server. At some point, I developed a problem with my partition map being semi-ignored. Mail is stored in multiple places, and I'm not sure why or entirely clear how it ended up there. My log is overflowing with entries such as… Jan 10 15:44:57 gilded-bat dovecot[65]: auth(default): od(john_doe_com): unable to find partition for tag=johndoe: using default mail location: /var/spool/imap/dovecot/mail …referring to each of my defined partitions. Here's what I semi-understand. /etc/dovecot/partition_map.conf.default contains: default:/var/spool/imap/dovecot/mail /etc/dovecot/partition_map.conf contains correct entries like default:/Mail JohnDoe:/Groups/JohnDoe/Mail [etc.] dovecotd -n is below. It's configuration with regard to mail store locations look ok to me, but then I'm a virgin. In practice, mail is being stored in three different locations. They're all full of mail directories and are busy. /var/spool/imap/dovecot/mail /Mail /Groups/JohnDoe/Mail …with of course the third entry being many entries for each client. The directories described definitely exist. Clients started out being able to see old mail that was transferred from the retired server, but no longer do. I'm not actually clear which of the three mail stores in use are being accessed by whom or for what. (And let's not even ask why none of this showed up in testing.) In short, I'm over my head and the villagers are outside with the usual pitchforks and torches. Thanks, Bryan dovecotd -n # 1.1.20apple0.5: /private/etc/dovecot/dovecot.conf Warning: fd limit 256 is lower than what Dovecot can use under full load (more than 356). Either grow the limit or change login_max_processes_count and max_mail_processes settings # OS: Darwin 10.5.0 x86_64 hfs base_dir: /var/run/dovecot syslog_facility: local6 protocols: pop3s imaps pop3 imap ssl_ca_file: /etc/certificates/gilded-bat.laughingboot.net.92CAF9E2B8684ABB0933B96C62F678EC73339F22.chain.pem ssl_cert_file: /etc/certificates/gilded-bat.laughingboot.net.92CAF9E2B8684ABB0933B96C62F678EC73339F22.cert.pem ssl_key_file: /etc/certificates/gilded-bat.laughingboot.net.92CAF9E2B8684ABB0933B96C62F678EC73339F22.key.pem ssl_cipher_list: ALL:!LOW:!SSLv2:!aNULL:!ADH:!eNULL disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_user: _dovecot login_process_per_connection: no max_mail_processes: 100 mail_max_userip_connections(default): 20 mail_max_userip_connections(imap): 20 mail_max_userip_connections(pop3): 10 verbose_proctitle: yes first_valid_uid: 6 first_valid_gid: 6 mail_access_groups: mail mail_location: maildir:/Mail/%u mail_debug: yes mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_process_sharing: full mail_max_connections: 5 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 lda: postmaster_address: postmaster(a)example.com hostname: gilded-bat.laughingboot.net mail_plugins: quota quota_full_tempfail: yes sendmail_path: /usr/sbin/sendmail auth_socket_path: /var/run/dovecot/auth-master log_path: /var/log/mailaccess.log info_log_path: /var/log/mailaccess.log auth default: mechanisms: gssapi login plain apop cram-md5 verbose: yes debug: yes debug_passwords: yes passdb: driver: od userdb: driver: od args: partition=/etc/dovecot/partition_map.conf enforce_quotas=yes socket: type: listen master: path: /var/run/dovecot/auth-master mode: 384 user: _dovecot group: mail plugin: quota_warning: storage=100%% /usr/libexec/dovecot/quota-exceeded.sh quota_warning2: storage=80%% /usr/libexec/dovecot/quota-warning.sh quota: maildir:User quota sieve: /var/spool/imap/dovecot/sieve-scripts/%u/dovecot.sieve

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[Dovecot] dsync not copying all mail
by Nick Rosier 10 Jan '11

10 Jan '11

Hi, I'm still trying to migrate from Dovecot 1.2.16 to 2.0.7 on FreeBSD. Previous attempts have failed with mails not being visible after the upgrade. Version 1.2.16 was migrated from maildir to dbox about a year ago via the convert-plugin. After previous attempts to "clean" the hybrid maildir-dbox situation I used imapsync to copy all mails from the old account to a new account. I would assume in this case I get a clean dbox-mailmap. I tried to run dsync on this new map but noticed a lot of mails are not syncing: [vmail@mail ~]$ find /vmail2/new/bunbun.be/nick | wc -l 5329 [vmail@mail ~]$ find /vmail2/old/bunbun.be/nick | wc -l 6134 Any ideas? N.

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