- dovecot - dovecot.org

Handle of "subscription" file/folder for IMAP
by Jorge Bastos 19 Nov '14

19 Nov '14

Hi, For IMAP users, there's the subscription file in the user's home, and if I try to subscribe more imap folders that are invisible, there's that one, but as it is a file, nothing is supposed to happen. Is there an way to, allow users to create the "subscriptions" folder without any collision, or just deny or don't show this file as an possible folder (which Is not) to subscribe. What does people normally do? Thanks in advanced,

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"subscription" file/folder for IMAP
by Jorge Bastos 19 Nov '14

19 Nov '14

Hi, For IMAP users, there's the subscription file in the user's home, and if I try to subscribe more imap folders that are invisible, there's that one, but as it is an file, nothing is supposed to happen. Is there an way to, allow users to create the "subscriptions" folder without any collision, or just deny or don't show this file as an possible folder (which Is not) to subscribe. What does people normally do? Thanks in advanced,

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Storage IOPs Calculation for Qmail Server
by SasiKumar.K 19 Nov '14

19 Nov '14

Dear DovecotORG, In my organization, we are about to implement Qmail Server. * The number of current users will be 800, in future it may increase upto 1200. * The number of concurrent users will be 300. I am the engineer to deploy the Qmail in Linux server. I need to tell the storage team on the IOPs requirement. I requested 8TB usable space for the mail storage (can scale up in future). Kindly provide your suggestion on this. Thanks & Regards, K.SasiKumar Systems Engineer, Locuz Enterprise Solutions Limited, Bangalore

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userdb-nss crash
by Yuriy Tabolin 18 Nov '14

18 Nov '14

Hi All. I have a some problem with dovecot, when I try to use nss in auth userdb. nss was setup to resolve users and group by winbind. nss and winbind works well, command "id user" shows remote user's info. I would like to use nss userdb, but dovecot crashes on start. Is this a bug or incorrect settings? Thank you for any help. dovecot log Nov 18 14:58:36 mail dovecot: auth: Panic: file userdb-nss.c: line 110 (userdb_nss_preinit): assertion failed: (bufsize > 0) Nov 18 14:58:36 mail dovecot: auth: Fatal: master: service(auth): child 19387 killed with signal 6 (core dumped) Nov 18 14:58:36 mail dovecot: master: Error: service(auth): command startup failed, throttling for 8 secs # doveconf -n # 2.2.15: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 10.0-RELEASE-p12 amd64 ufs auth_cache_size = 256 M auth_failure_delay = 3 secs auth_username_format = %n auth_verbose = yes auth_winbind_helper_path = /usr/local/bin/ntlm_auth base_dir = /var/run/dovecot/ disable_plaintext_auth = no listen = * mail_location = maildir:/home/%u/Maildir passdb { args = dovecot driver = pam } protocols = imap service anvil { client_limit = 2051 } service auth { client_limit = 3000 } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_limit = 1000 process_min_avail = 5 service_count = 1 vsz_limit = 64 M } service imap { process_limit = 2048 vsz_limit = 256 M } ssl = no userdb { args = service=winbind driver = nss } verbose_proctitle = yes protocol imap { mail_max_userip_connections = 20 } # gdb /usr/local/libexec/dovecot/auth /home/tabolin/auth.core GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "amd64-marcel-freebsd"...(no debugging symbols found)... Core was generated by `auth'. Program terminated with signal 6, Aborted. Reading symbols from /usr/local/lib/dovecot/libdovecot.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/dovecot/libdovecot.so.0 Reading symbols from /lib/libcrypt.so.5...(no debugging symbols found)...done. Loaded symbols for /lib/libcrypt.so.5 Reading symbols from /usr/lib/libpam.so.5...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libpam.so.5 Reading symbols from /usr/local/lib/libldap-2.4.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/libldap-2.4.so.2 Reading symbols from /usr/local/lib/liblber-2.4.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/local/lib/liblber-2.4.so.2 Reading symbols from /lib/libc.so.7...(no debugging symbols found)...done. Loaded symbols for /lib/libc.so.7 Reading symbols from /usr/lib/libssl.so.7...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libssl.so.7 Reading symbols from /lib/libcrypto.so.7...(no debugging symbols found)...done. Loaded symbols for /lib/libcrypto.so.7 Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols found)...done. Loaded symbols for /libexec/ld-elf.so.1 #0 0x00000000114ece1a in kill () from /lib/libc.so.7 (gdb) # cat /etc/nsswitch.conf group: files winbind group_compat: nis hosts: files dns networks: files passwd: files winbind passwd_compat: nis shells: files services: compat services_compat: nis protocols: files rpc: files # cat /etc/pam.d/dovecot auth required /usr/local/lib/pam_winbind.so account required /usr/local/lib/pam_winbind.so -- <http://speechpro.com> С уважением, *Таболин Юрий Олегович* Системный администратор Центр Речевых Технологий Best regards, Tabolin Yuriy System administrator Speech Technology Center Тел/Tel: +7 (812) 325-8848, доб/ext 6225 Факс/Fax: +7 (812) 327-92-97 Моб/Mob: +7 (981) 130-23-03 <http://www.linkedin.com/company/speech-technology-center> <https://twitter.com/speechpro_ru> <http://vk.com/speechpro> <https://www.facebook.com/speechpro.ru>

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custom ssh port doveadm sync
by dvm＠rdyn.net 18 Nov '14

18 Nov '14

Hi all, First sorry i really couldn't find it back been searching everywhere even the docs and its bit confusing. I am using # doveadm -D sync -u *(a)mydomain.net remote:myserver.net # which works perfect however for security reasons we now need to change the sshd port on the remote server. How do i tell doveadm to use a custom SSH port (would love to continue to use just the ssh connection), if anyone could explain that would be great, because all i found is custom tcp or tcp ssl which is not what we want to use, as i wish to stick with custom ssh port. Regards, r. -- This email was Virus checked by UTM 9. http://www.astaro.org

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Different SSL certificates per IP and protocol
by tree 18 Nov '14

18 Nov '14

Hi Dovecot Users and Developers, I am hosting the server with multiple domains. I have setup the dovecot with the instructions from http://wiki2.dovecot.org/SSL/DovecotConfiguration Each domain has it's own ip address. However, when I connect via Thunderbird or any other mail clients, the client is ONLY picking up the top-level "default" ssl_key and ssl_cert and the certificat in /etc/ssl/dovecot.pem Is this a bug? This is on Debian Wheezy. Any help pointing in the right direction would be appreciated thanks. Here is the ssl section: ----------- ssl_cert = </etc/ssl/dovecot.pem ssl_key = </etc/ssl/dovecot.pem local 192.0.2.10 { # instead of IP you can also use hostname, which will be resolved protocol imap { ssl_cert = </etc/ssl/dovecot/imap-01.example.com.cert.pem ssl_key = </etc/ssl/dovecot/imap-01.example.com.key.pem } protocol pop3 { ssl_cert = </etc/ssl/dovecot/pop-01.example.com.cert.pem ssl_key = </etc/ssl/dovecot/pop-01.example.com.key.pem } } local 192.0.2.20 { protocol imap { ssl_cert = </etc/ssl/dovecot/imap-02.example.com.cert.pem ssl_key = </etc/ssl/dovecot/imap-02.example.com.key.pem } protocol pop3 { ssl_cert = </etc/ssl/dovecot/pop-02.example.com.cert.pem ssl_key = </etc/ssl/dovecot/pop-02.example.com.key.pem } } -----------------------

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Mail sync at filesystem level
by Cédric Jeanneret 18 Nov '14

18 Nov '14

Hello, I'm currently building a mail infra using some decentralized filesystem for the storage. As I'm wanting to get multiple "entry-points" (servers running dovecot + postfix + other mail-related stuff), all of them sharing the same storage (most probably xtreemfs), how will dovecot cope in this case? As I see things: server1 gets a mail for User1; it pushes it to the xtreemfs directory. server2 shares the same xtreemfs directory, thus it can access the same mail listing User1 connects to server2: will he see the new mail? Will dovecot on server2 know about it? Thanks! Cheers, C.

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Understanding why Dovecot unexpectedly died
by Luca Bertoncello 18 Nov '14

18 Nov '14

Hi list! I use Dovecot 1.2.17 (I can't upgrade right now, due to many reasons), controlled by Pacemaker (I have an HA-Cluster). Now I see that Pacemaker restarts often Dovecot. I wrote my own script to manage Dovecot, since Pacemaker does not have his own. My script, by the "monitor" section has this: monitor) if [ ! -e $OCF_RESKEY_pid ]; then echo "stopped (no pidfile)" echo "DOVECOT STOPPED - NO PIDFILE" | /usr/bin/logger -p local0.info -t DOVECOT-MONITOR -i exit $OCF_NOT_RUNNING else /bin/ps axuwf | /bin/grep `/bin/cat $OCF_RESKEY_pid` | /bin/grep -v grep > /dev/null 2>&1 if [ $? -ne 0 ]; then echo "stopped" echo "DOVECOT STOPPED - NO PROCESS" | /usr/bin/logger -p local0.info -t DOVECOT-MONITOR -i exit $OCF_NOT_RUNNING else if [ "`/bin/netstat -tupan | /bin/grep dovecot | /bin/grep $OCF_RESKEY_bindaddr | /usr/bin/wc -l`" -ne 0 ]; then exit $OCF_SUCCESS else echo "DOVECOT STOPPED - NO LISTEN [`/bin/netstat -tupan | /bin/grep dovecot`]" | /usr/bin/logger -p local0.info -t DOVECOT-MONITOR -i exit $OCF_ERR_GENERIC fi fi fi exit $OCF_SUCCESS ;; The "loggers" was added now to try to understand why it dies... Well, I can see in my syslog, when Pacemaker restarts Dovecot, these lines: ov 15 18:59:09 mail01 DOVECOT-MONITOR[530]: DOVECOT STOPPED - NO LISTEN [tcp 0 0 192.168.33.1:37545 192.168.33.3:3306 ESTABLISHED 637/dovecot-auth Nov 15 18:59:09 mail01 DOVECOT-MONITOR[530]: tcp 0 0 192.168.33.1:37537 192.168.33.3:3306 ESTABLISHED 529/dovecot-auth] So, there is no "dovecot"-Process listening anymore... Normally I have these: tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN 634/dovecot tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 634/dovecot tcp 0 0 0.0.0.0:993 0.0.0.0:* LISTEN 634/dovecot tcp 0 0 0.0.0.0:995 0.0.0.0:* LISTEN 634/dovecot tcp 0 0 192.168.33.1:40994 192.168.33.3:3306 VERBUNDEN 891/dovecot-auth tcp 0 0 192.168.33.1:40984 192.168.33.3:3306 VERBUNDEN 638/dovecot-auth tcp6 0 0 :::110 :::* LISTEN 634/dovecot tcp6 0 0 :::143 :::* LISTEN 634/dovecot tcp6 0 0 :::993 :::* LISTEN 634/dovecot tcp6 0 0 :::995 :::* LISTEN 634/dovecot In the mail.log and mail.err I can't see anything but: Nov 15 18:59:13 mail01 dovecot: Dovecot v1.2.17 starting up Nov 15 18:59:13 mail01 dovecot: auth-worker(default): mysql: Connected to 192.168.33.3 (exim) And in the syslos there is nothing about Dovecot... Any idea? Thanks a lot! Luca Bertoncello (lucabert(a)lucabert.de)

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stop deletion of mails
by Edwardo Garcia 18 Nov '14

18 Nov '14

Is possible with dovecot? Legal department have told us we need to stop anyone from delete email on corporate mail server, so nobody, even managers can not anymore delete any mail?

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LMTPS : TLS over LMTP not working
by Stanislas SABATIER 17 Nov '14

17 Nov '14

Hello, I tried to activate SSL on LMTP service, to secure connections between Postfix and Dovecot on my LAN, but Dovecot is not negociating a TLS session with Postfix. If I enforce TLS for LMTP at Postfix's side, communication between Postfix and Dovecot is not working. I put ssl = yes ssl_cert = </dovecot/ssl/ssl-LMTP.pem ssl_key = </dovecot/ssl/ssl-LMTP.key in section protocol LMTP within 20-lmtp.conf and service lmtp { inet_listener lmtp { name = dovecot_lmtp address = xx.xx.xx.xx port = 26 ssl = yes } process_min_avail = 5 } within 10-master.conf Did I miss something ? Thank you for your help. Regards, Stan

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