- dovecot - dovecot.org

Deleting / Removing users
by John Krug 03 Mar '16

03 Mar '16

i have a list of users that I’ve removed from LDAP and I want to delete their mail storage. sdbox Dovecot 2.2.15.8 I have mail messages in one location and indexes in another. Should I just rm -rf /messages/<username> rm -rf /indexes/<username> Thanks, JK ----------------------------------------------------------------------- John "JK" Krug System Administrator The University of Chicago | Laboratory Schools 1362 East 59th Street | Chicago, IL 60637 Phone: (773) 834-4476 jk(a)ucls.uchicago.edu <mailto:jkallo@ucls.uchicago.edu> | http://helpdesk.ucls.uchicago.edu _______________________________________________

2 3

Get mailbox from its guid through IMAP
by Peter Chiochetti 02 Mar '16

02 Mar '16

In the shell I'do: doveadm fetch -u bob mailbox mailbox-guid $box uid 1 Is there a way through IMAP to get the same? -- peter

2 1

user configuration question
by Eric Abrahamsen 02 Mar '16

02 Mar '16

I've been using mbsync to sync this email account to a local Dovecot installation. I used to use Gmail, through Google Apps, and a while ago switched the account to self-hosting. I didn't want to upload years' worth of old email to my old server, so I've had two accounts in my MUA: one talking to the local Dovecot account for the old emails, and a second talking directly to the server for the new emails. I'd like to sync the new account to Dovecot as well, and I'm having trouble wrapping my brain around how to configure the two side-by-side accounts in Dovecot (I know there are other solutions to this, but I'm also just trying to figure out how this works). What I don't grok is the exact effect of the different username fields in the passdb file, and how they combine with username_format. Right now my dovecot.conf has this: passdb { driver = passwd-file args = username_format=%u /etc/dovecot/passwd } userdb { driver = static args = uid=eric gid=users home=/home/eric/.mail/%d/%n username_format=%u default_fields = mail=maildir:/home/eric/.mail/%d/%n/mail } And /etc/dovecot/passwd: eric@ericabrahamsen.net:{PLAIN}password:eric@ericabrahamsen.net Say I want to keep my existing mail where it is, and have all the new mail go into ~/.mail/ericabrahamsen.net/eric-new/mail. Ie, when mbsync connects to the local Dovecot, it does so with the username eric-new(a)ericabrahamsen.net. Now, in Dovecot's conf, do I change the email address in the first field of /etc/dovecot/passwd, or the third field, or both? And, if it isn't too much trouble, what is the difference between the two? Thanks! Eric

1 0

Dsync induces redundant mail after rapid append/expunge repeatedly
by 潘信傑 02 Mar '16

02 Mar '16

I meet the problem about dsync with expunge. The problems is expunged mail would reappear after dsyncing and it is easily to reproduce. Environment Settings: - Two servers(serverA, serverB) both enabled plugin "*replication"* - And more detail get by "dovecot -n" show below Reproduce flow: - Run two processes pA and pB both would run in while loop - pA(All behavior is on Draft mailbox and all on serverA): - Clean "Draft" mailbox of userA - Run the following imap command of userA - imap save (save new mail to Draft) - imap delete (delete old mail on Draft) - imap expunge * - Check if draft only have one email (it would be failed in about 50 loops)* - pB(Send mail to serverB): - Send new mail to userA (which would be save in INBOX) It would be easier reproduce by increasing server loading. I have found something - T he expunge changes from server A in dsync connection don't send immediately, these expunge changes appear after 1~2 dsync connection over. - The replicated mail is generated from serverB and sync back to serverA so expunged mail reappeared. dovecot -n (ServerA) # 2.2.19: /etc/dovecot/dovecot.conf # OS: Linux 3.10.77 x86_64 ext4 auth_mechanisms = plain login default_internal_user = root default_login_user = dovecot default_vsz_limit = 0 disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u dsync_target_servers = tcps:10.13.23.139:24245 lda_mailbox_autocreate = yes mail_debug = yes mail_fsync = never mail_location = maildir:/var/spool/mail/%d/%-4.04i/%i/Maildir mail_max_userip_connections = 30 mail_never_cache_fields = * mail_plugins = " notify replication mail_log" managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave duplicate namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { fts = lucene fts_autoindex = yes fts_lucene = whitespace_chars=@._/\~&,()[]" mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change append mail_log_fields = uid box msgid size flags from subject } postmaster_address = postmaster@localhost protocols = imap pop3 lmtp imap pop3 sieve replication_dsync_parameters = -N -l 30 -U service aggregator { fifo_listener replication-notify-fifo { group = users mode = 0666 user = admin } unix_listener replication-notify { group = users mode = 0666 user = admin } } service doveadm { inet_listener { address = 10.13.23.136,127.0.0.1 port = 24245 ssl = yes } } service imap-login { inet_listener imap { address = 10.13.23.136,127.0.0.1 port = 143 } inet_listener imaps { address = 10.13.23.136,127.0.0.1 port = 993 ssl = yes } process_limit = 256 service_count = 0 } service indexer-worker { process_limit = 8 } service pop3-login { inet_listener pop3 { address = 10.13.23.136,127.0.0.1 port = 110 } inet_listener pop3s { address = 10.13.23.136,127.0.0.1 port = 995 ssl = yes } process_limit = 256 service_count = 0 } service replicator { unix_listener replicator-doveadm { mode = 0666 } } userdb { driver = passwd } protocol lda { mail_plugins = " notify replication mail_log sieve" } dovecot -n (ServerB) $ ./sbin/dovecot -n # 2.2.19: /etc/dovecot/dovecot.conf # OS: Linux 3.10.77 x86_64 auth_mechanisms = plain login default_internal_user = root default_login_user = dovecot default_vsz_limit = 0 disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u dsync_target_servers = tcps:10.13.23.136:24245 lda_mailbox_autocreate = yes mail_debug = yes mail_fsync = always mail_location = maildir:/var/spool/mail/%d/%-4.04i/%i/Maildir mail_max_userip_connections = 30 mail_never_cache_fields = * mail_plugins = " notify replication mail_log" managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational reg ex imap4flags copy include variables body enotify environment mailbox date ihave duplicate namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { fts = lucene fts_autoindex = yes fts_lucene = whitespace_chars=@._/\~&,()[]" mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change append mail_log_fields = uid box msgid size flags from subject } postmaster_address = postmaster@localhost protocols = imap pop3 lmtp imap pop3 sieve replication_dsync_parameters = -N -l 30 -U service aggregator { fifo_listener replication-notify-fifo { group = users mode = 0666 user = admin } unix_listener replication-notify { group = users mode = 0666 user = admin } } service doveadm { inet_listener { address = 10.13.23.139,127.0.0.1 port = 24245 ssl = yes } } service imap-login { inet_listener imap { address = 10.13.23.139,127.0.0.1 port = 143 } inet_listener imaps { address = 10.13.23.139,127.0.0.1 port = 993 ssl = yes } process_limit = 256 service_count = 0 } service indexer-worker { process_limit = 4 } service pop3-login { inet_listener pop3 { address = 10.13.23.139,127.0.0.1 port = 110 } inet_listener pop3s { address = 10.13.23.139,127.0.0.1 port = 995 ssl = yes } process_limit = 256 service_count = 0 } service replicator { unix_listener replicator-doveadm { mode = 0666 } } userdb { driver = passwd } protocol lda { mail_plugins = " notify replication mail_log sieve" } Regards, Jay Pan

2 2

Setup changes 1.x to 2.x -- custom POP3 account handling required.
by Andrew McGlashan 02 Mar '16

02 Mar '16

Hi, Previously I did /special/ processing for some email accounts; if a particular file existed in the user's home directory, then I caused the account to use /var/mail/$USER file for POP -- otherwise it used IMAP. Now, because I adjusted the setup for POP only, IMAP still worked perfectly well. Some users have both POP and IMAP access for various reasons. The special POP processing was done using a shell script [1] in place of: /usr/lib/dovecot/pop3 - which in turn called the normal binary once setting up the environment. Now, I have been forced to upgrade my Debian from squeeze-lts to wheezy and the dovecot setup is quite different. How can I implement my /wrapper/ script for POP handling now? Here is my current setup with dovecot -n ... # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-xen-amd64 x86_64 Debian 7.9 mail_location = maildir:~/Maildir namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Items" { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap pop3" service imap-login { inet_listener imap { port = 0 } } service pop3-login { inet_listener pop3 { port = 0 } } ssl = required ssl_cert = </etc/exim4/exim.crt ssl_key = </etc/exim4/exim.key userdb { driver = passwd } [1] This is the content of the original wrapper script: #!/bin/sh if [ -f $HOME/.use-mbox-for-pop3s ]; then export MAIL=mbox:$HOME/mail:INBOX=/var/mail/$USER export USER_INBOX=/var/mail/$USER if [ -f $USER_INBOX ] then export USER_INBOX_GROUP=$(stat -c %G $USER_INBOX) if [ $USER_INBOX_GROUP != $USER ] then ( date ls -l $USER_INBOX chown Debian-exim:$USER $USER_INBOX ls -l $USER_INBOX ) >> /var/log/usr-lib-dovecot--pop3-affinity.log fi fi else if [ -d $HOME/Maildir ]; then export MAIL=Maildir:$HOME/Maildir else export MAIL=mbox:$HOME/mail:INBOX=/var/mail/$USER fi fi # Finally execute the imap/pop3. If you use both, you'll need two scripts. # - this customization just for POP3S ... exec /usr/lib/dovecot/pop3 Thanks AndrewM

2 2

dsync issues due to Prefix difference?
by Mark Little 02 Mar '16

02 Mar '16

Hi everyone, I'm hoping I am just missing something obvious - but I cannot seem to get a one-way migration dsync working between two Dovecot servers because the Prefix configuration is different. I am doing a migration from our old Dovecot servers to some new cPanel based ones. Source: 2.2.15 Dest: 2.2.21 Here is the debug output for the sync: doveadm(root): Debug: Loading modules from directory: /usr/lib/dovecot/modules/doveadm doveadm(root): Debug: Module loaded: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_sieve_plugin.so doveadm(testuser(a)example.ca): Debug: Effective uid=1322, gid=1322, home=/khstor3/khmail-mailboxes/l/li/example.ca/testuser doveadm(testuser(a)example.ca): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir doveadm(testuser(a)example.ca): Debug: maildir++: root=/khstor3/khmail-mailboxes/l/li/example.ca/testuser/Maildir, index=, indexpvt=, control=, inbox=/khstor3/khmail-mailboxes/l/li/example.ca/testuser/Maildir, alt= doveadm(testuser(a)example.ca): Debug: Namespace : Using permissions from /khstor3/khmail-mailboxes/l/li/example.ca/testuser/Maildir: mode=0777 gid=default stdin: is not a tty dsync-local(testuser(a)example.ca): Debug: brain M: Local mailbox tree: INBOX guid=f055ac07d79cad508a7a000075e38adc uid_validity=1353555159 uid_next=2085 subs=no last_change=0 last_subs=0 dsync-local(testuser(a)example.ca): Debug: brain M: Local mailbox tree: Junk guid=703a8b1d51ceab56f91e0000667eee40 uid_validity=1391566942 uid_next=1 subs=yes last_change=0 last_subs=1454100049 dsync-local(testuser(a)example.ca): Debug: brain M: Local mailbox tree: Trash guid=9bee9f0f2aacb65039260000b171e44d uid_validity=1353555163 uid_next=25 subs=no last_change=0 last_subs=0 dsync-local(testuser(a)example.ca): Debug: brain M: Local mailbox tree: Drafts guid=4d03661058a0f1524f240000e9d81ad0 uid_validity=1391566936 uid_next=1 subs=no last_change=0 last_subs=0 dsync-local(testuser(a)example.ca): Debug: brain M: Local mailbox tree: Sent guid=99ee9f0f2aacb65039260000b171e44d uid_validity=1353555161 uid_next=4 subs=no last_change=0 last_subs=0 dsync-local(testuser(a)example.ca): Debug: brain M: Remote mailbox tree: INBOX guid=6460141741cfab5643470000afb0d608 uid_validity=1454100291 uid_next=2064 subs=no last_change=0 last_subs=0 dsync-local(testuser(a)example.ca): Debug: brain M: Remote mailbox tree: INBOX.Trash guid=6360141741cfab5643470000afb0d608 uid_validity=1454100290 uid_next=12 subs=yes last_change=0 last_subs=1454100289 dsync-local(testuser(a)example.ca): Debug: brain M: Remote mailbox tree: INBOX.Sent guid=6260141741cfab5643470000afb0d608 uid_validity=1454100289 uid_next=2 subs=yes last_change=0 last_subs=1454100289 dsync-remote(testuser(a)example.ca): Error: Couldn't find namespace for mailbox Junk I believe the problem is because on the source we have no prefix set, but on the destination it has INBOX as the prefix. I need to use dsync because we have many POP3 clients so I need to ensure the UIDL's are copied correctly. Here is the output from 'doveconf namespace': Source: namespace inbox { disabled = no hidden = no ignore_on_failure = no inbox = yes list = yes location = mailbox Drafts { auto = subscribe driver = special_use = \Drafts } mailbox Junk { auto = subscribe driver = special_use = \Junk } mailbox Sent { auto = subscribe driver = special_use = \Sent } mailbox "Sent Messages" { auto = no driver = special_use = \Sent } mailbox Trash { auto = subscribe driver = special_use = \Trash } order = 0 prefix = separator = subscriptions = yes type = private } Destination: namespace { disabled = no hidden = no ignore_on_failure = no inbox = yes list = yes location = mailbox Archive { auto = create autoexpunge = 0 comment = driver = special_use = \Archive } mailbox Archives { auto = no autoexpunge = 0 comment = driver = special_use = \Archive } mailbox Drafts { auto = subscribe autoexpunge = 0 comment = driver = special_use = \Drafts } mailbox Junk { auto = create autoexpunge = 0 comment = driver = special_use = \Junk } mailbox Sent { auto = subscribe autoexpunge = 0 comment = driver = special_use = \Sent } mailbox "Sent Messages" { auto = no autoexpunge = 0 comment = driver = special_use = \Sent } mailbox Trash { auto = subscribe autoexpunge = 0 comment = driver = special_use = \Trash } order = 0 prefix = INBOX. separator = subscriptions = yes type = private } If anyone could provide some assistance it would be greatly appreciated! Thanks, Mark

2 6

where is pop3_migration_ignore_missing_uidls=yes set?
by Leon Kyneur 02 Mar '16

02 Mar '16

While doing pop3 migrations with dsync I am getting an error: dsync(user(a)domain.net): Error: pop3_migration: 2 POP3 messages have no matching IMAP messages (first POP3 msg 2638 UIDL fb3d6f3299541e695a28585f5803ed1c) - set pop3_migration_ignore_missing_uidls=yes to continue anyway dsync(user(a)domain.net): Error: Exporting mailbox INBOX failed: Can't lookup pop3-uidl for UID=3252: POP3 UIDLs couldn't be synced Can't see this is doveconf -a so it's not a setting? - tried configuring it as a plugin setting but that didn't work... Where is the correct place to set this? TIA

2 1

Alternative storage backend for Dovecot
by Oleksandr Natalenko 01 Mar '16

01 Mar '16

Hi. We have corporate Dovecot setup with GlusterFS as file storage. We store maildirs on GlueterFS share, mounting it via NFS. Mounting share via native GlusterFS FUSE client introduces visible performance overhead. Also, NFS mount does not provide us with HA. That's why I have an idea to use GlusterFS C API to access maildirs share. I'd like to preserve maildir structure, but get access to it not via FS mount point but with GlusterFS C API calls. I've discovered that Dovecot source tree has src/lib-fs infrastructure with fs-posix implemented on top of it. Is that the right place to start from? GlusterFS C API calls are POSIX-like, so they could be easily used as substitutions for VFS ops. Could such a backend be implemented as separate plugin? Are there any examples of alternative storage backend to look at? Thanks. Regards, Oleksandr.

2 1

search problem dovecot 2.2.21 + fts - Solr
by Anderson Barbosa 01 Mar '16

01 Mar '16

Hello, Realized update dovecot on my server. Now the search is returning differently from the previous version bringing reference information of other messages . For example when doing a search for anderson.joao this new version of the dovecot dovecot 2.2.21 + fts - Solr response will be all email that has the word anderson and joao, instead of returning only items with the word anderson.joao. Before used version 2.2.18 + dovecot fts - Solr and the problem did not occur . For example practical test : Dovecot 2.2.18 # telnet SERVER 143 Trying SERVER... Connected to SERVER. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Zimbra IMAP4. a login conta(a)conta.com.br 1223456 a OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAn a select INBOX * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 14 EXISTS * 0 RECENT * OK [UIDVALIDITY 1452548222] UIDs valid * OK [UIDNEXT 25] Predicted next UID * OK [HIGHESTMODSEQ 52] Highest a OK [READ-WRITE] Select completed (0.001 secs). a SEARCH text "anderson" * SEARCH 11 12 (2 found emails) a OK Search completed (0.265 secs). a SEARCH text "joao" * SEARCH 13 14 (2 found emails) a OK Search completed (0.003 secs). a SEARCH text "anderson.joao" * SEARCH (0 found emails) a OK Search completed (0.004 secs). a logout * BYE Logging out a OK Logout completed. Connection closed by foreign host. Dovecot 2.2.21 # telnet SERVER 143 Trying SERVER... Connected to SERVER. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Zimbra IMAP4. a login conta(a)conta.com.br 1223456 a OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAn a select INBOX * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 14 EXISTS * 0 RECENT * OK [UIDVALIDITY 1452548222] UIDs valid * OK [UIDNEXT 25] Predicted next UID * OK [HIGHESTMODSEQ 52] Highest a OK [READ-WRITE] Select completed (0.000 + 0.000 secs). a SEARCH text "anderson" * SEARCH 11 12 (2 found emails) a OK Search completed (0.004 + 0.000 secs). a SEARCH text "joao" (2 found emails) * SEARCH 13 14 a OK Search completed (0.005 + 0.000 secs). a SEARCH text "anderson.joao" * SEARCH 11 12 13 14 *(4 found emails)* a OK Search completed (0.005 + 0.000 secs). a logout * BYE Logging out a OK Logout completed. Connection closed by foreign host. Even using characters Special "" \ scape, ' ' for an answer will always be all emails with the word anderson and joao. Checking the Changelog dovecot noticed que NAS versions Previous v2.2.20 and v2.2.19 certain changes with respect to fts . There Have Another way to Make Search for Exact Word In this new version to loft? -- Anderson Barbosa dos Santos Em todo o universo, nada existe de mais parecido com Deus que o silêncio. "Johanes Eckhart"

3 3

Inconsistent mdbox index while running doveadm altmove
by Ricardo Machini Barbosa 01 Mar '16

01 Mar '16

Hello, I was performing doveadm altmove for one account while this mailbox was being accessed. Dovecot version: 2.2.21 Mailbox format: mdbox Command: doveadm altmove -u user1(a)domain.com.br before 360d This command took about 5 minutes to finish and during the execution I found some log messages: Feb 25 19:57:51 dovecot: imap(user1(a)domain.com.br): Error: mdbox map /var/mail/user1/mdbox/storage/dovecot.map.index corrupted: Unexpectedly lost INBOX uid=77 map_uid=76 Feb 25 19:57:51 dovecot: imap(user1(a)domain.com.br): Internal error occurred. Refer to server log for more information. [2016-02-25 19:57:51] in=4798 out=1361819 deleted=0 expunged=0 trashed=0 Feb 25 19:57:51 dovecot: imap(user1(a)domain.com.br): Warning: fscking index file /var/mail/user1/mdbox/storage/dovecot.map.index Feb 25 19:58:15 dovecot: imap(user1(a)domain.com.br): Error: /var/mail/user1/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index reset, view is now inconsistent Feb 25 19:58:20 dovecot: imap(user1(a)domain.com.br): Error: /var/mail/user1/mdbox/mailboxes/Rascunhos/dbox-Mails/dovecot.index reset, view is now inconsistent After that these messages moved to alternate storage disappeared from the mailbox/IMAP but these files were all on alternative storage. I had to execute doveadm force-resync -u user1(a)domain.com.br INBOX to recovery this mailbox, but losing all e-mail's flags. I should do some kind of lock before running the command altmove ? Regards, Ricardo

2 1

Re: severe fork() problems with new dovecot server
by J. Niklas 01 Mar '16

01 Mar '16

On 01.03.2016 18:21, Dolf Schimmel wrote: > Recently I played around a little with cgroups where you can limit the max number of processes per cgroup. > Could it be that, perhaps, you've stumbled upon such a limit? > Systemd does contain all services by default in their own cgroup afaik, > so it could be that you're using it unknowingly. Yes, yes, \o/ ;-) #> systemctl status dovecot.service * dovecot.service - Dovecot IMAP/POP3 email server Loaded: loaded (/lib/systemd/system/dovecot.service; enabled; vendor preset: enabled) Drop-In: /etc/systemd/system/dovecot.service.d `-ulimits.conf Active: active (running) since Tue 2016-03-01 15:28:29; 4h 24min ago Main PID: 10098 (dovecot) Tasks: 204 (limit: 512) CGroup: /system.slice/dovecot.service There ist my "512". The way of systemd, ignoring all the config stuff that has been there for decades while inposing its own, complex and very sparsely documented ruleset on top is beginning to seriously annoy me. At least I would have expected some sort of syslog message. Just for the records, this can be changed by adding e.g. TasksMax=4096 to the /etc/systemd/system/dovecot.service.d/ulimits.conf I cited in my OP. Now I'll have to wait and see how things will evolve tomorrow. Thank you so much for the great hint! -- kind regards, Jon

2 1

severe fork() problems with new dovecot server
by J. Niklas 01 Mar '16

01 Mar '16

Hi all, I am getting to you because I am pretty desperate by now. Please read this and share your ideas. I set up a new Mail server with roughly 750 active accounts on it, based on the usual dovecot+postfix+amavis+sql based vmail setup. This is not the first time I did something like this, but admittedly my largest setup so far. I took my time to setup everything pretty straight and stable and migrated all accounts in time with almost no glitches using imapc and pop3c. Things started out smoothly - until the first business morning when the log suddenly began to pop messages like these: dovecot: master: Error: service(imap): fork() failed: Resource temporarily unavailable dovecot: master: Error: service(pop3): fork() failed: Resource temporarily unavailable The error is not confined to a certain service. There are no other messages in dmesg or syslog which could help in closing in on the root cause. The server always runs at load around 0.4 to 0.5 and has plenty of RAM and Disk, too. Of course I checked resource limits and cranked up everything I could possibly think of to numbers that should easily suffice: /etc/security/limits.conf: daemon soft nproc 2048 daemon hard nproc 3128 dovecot soft nproc 2048 dovecot hard nproc 3128 vmail soft nproc 2048 vmail hard nproc 3128 vmail soft nofile 32768 vmail hard nofile 49152 /etc/systemd/system/dovecot.service.d/ulimits.conf: [Service] LimitNOFILE=65534 However, all my attempts on resolving the problem were futile so far. To work around the problem I implemented a log watcher which constantly looks for the fork failure and dumps some debug info before restarting dovecot to make the problem "go away" - until dovecot hits whatever barrier there is again. Here are today's numbers I gathered from this: > forkdump_03-01_09-42: pop=3, imap=446, all=503, postfix:22, sys: 716 > forkdump_03-01_10-09: pop=9, imap=444, all=510, postfix:28, sys: 741 > forkdump_03-01_10-42: pop=5, imap=450, all=507, postfix:25, sys: 748 > forkdump_03-01_11-18: pop=5, imap=451, all=512, postfix:29, sys: 757 > forkdump_03-01_11-48: pop=3, imap=474, all=511, postfix:37, sys: 765 > forkdump_03-01_12-23: pop=7, imap=444, all=511, postfix:22, sys: 752 > forkdump_03-01_12-53: pop=3, imap=444, all=503, postfix:24, sys: 747 > forkdump_03-01_13-21: pop=3, imap=458, all=504, postfix:31, sys: 766 > forkdump_03-01_13-41: pop=4, imap=451, all=505, postfix:23, sys: 755 > forkdump_03-01_14-35: pop=5, imap=436, all=502, postfix:31, sys: 768 > forkdump_03-01_14-59: pop=3, imap=445, all=501, postfix:27, sys: 764 > forkdump_03-01_15-28: pop=6, imap=452, all=507, postfix:25, sys: 769 There you see the number of pop3 and imap childs in the process list as well as the total number of all dovecot processes and all postfix processes, summarized directly after the fork problem appears in the log. The last column is the sum of all processes in the system. Here is a run where the numbers are measured as the server approaches the last entry in the list above. > 15:26:15: pop=3, imap=432, all=485, VSZ: 14353k, postfix:30, sys: 749 > 15:26:30: pop=4, imap=435, all=490, VSZ: 14497k, postfix:30, sys: 754 > 15:26:45: pop=3, imap=439, all=492, VSZ: 14560k, postfix:28, sys: 754 > 15:27:00: pop=3, imap=444, all=497, VSZ: 14711k, postfix:28, sys: 760 > 15:27:15: pop=4, imap=442, all=496, VSZ: 14673k, postfix:25, sys: 756 > 15:27:30: pop=4, imap=444, all=497, VSZ: 14721k, postfix:25, sys: 757 > 15:27:46: pop=3, imap=446, all=498, VSZ: 14756k, postfix:25, sys: 758 > 15:28:01: pop=3, imap=446, all=497, VSZ: 14718k, postfix:24, sys: 756 > 15:28:16: pop=3, imap=455, all=507, VSZ: 15018k, postfix:25, sys: 767 > 15:28:18: pop=3, imap=455, all=507, VSZ: 15018k, postfix:25, sys: 767 > 15:28:20: pop=3, imap=452, all=504, VSZ: 14931k, postfix:25, sys: 764 ---- service(pop3): fork() failed: Resource temporarily unavailable ---- > 15:28:22: pop=4, imap=452, all=505, VSZ: 14954k, postfix:25, sys: 770 > 15:28:24: pop=4, imap=452, all=505, VSZ: 14954k, postfix:25, sys: 770 > 15:28:26: pop=4, imap=451, all=504, VSZ: 14925k, postfix:25, sys: 769 > 15:28:28: pop=5, imap=451, all=506, VSZ: 14980k, postfix:25, sys: 771 ---- dovecot restart complete ---- > 15:28:30: pop=3, imap=11, all=22, VSZ: 485k, postfix:25, sys: 282 > 15:29:00: pop=4, imap=65, all=83, VSZ: 2293k, postfix:26, sys: 344 > 15:29:31: pop=3, imap=91, all=111, VSZ: 3129k, postfix:27, sys: 373 It always seems to happen shortly after the number of dovecot processes goes beyond 500. The VSZ column is the VSZ sum of all dovecot procs. The number of files opened by vmail (lsof -u <vmailuid> | wc -l) at that moment usually is between 13k and 15k. sysctl fs.file-nr mostly is around 16k total but the system limit is set way higher (at 1532853) However, as you can see in the following dump, there is no process_limit or whatever being set to 500 or 512 or similar. # --------- su vmail -c "ulimit -Ha:" --------------- core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 60026 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 49152 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 3128 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited # ---------------- dovecot -n (mildly anonymized) --------------- # 2.2.18: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.8 (0c4ae064f307+) # OS: Linux 4.4.0-8-generic x86_64 Ubuntu Xenial Xerus (development branch) xfs auth_cache_negative_ttl = 0 auth_cache_size = 50 M auth_mechanisms = plain login default_client_limit = 10000 dict { quota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } hostname = my.mail.host imap_client_workarounds = delay-newmail lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lda_original_recipient_header = X-Original-To listen = * mail_location = sdbox:/mailsrv/users/%d/%u mail_plugins = quota notify mail_log fts managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { fts_autoindex = yes quota = dict:User quota::proxy::quota sieve = file:~/sieve;active=~/.dovecot.sieve sieve_dir = ~/sieve stats_refresh = 30s stats_track_cmds = yes } postmaster_address = postmaster(a)my.mail.host protocols = " imap lmtp sieve pop3" service anvil { client_limit = 11227 } service auth { client_limit = 11324 unix_listener /mailsrv/spool/private/auth { group = postfix mode = 0666 user = postfix } } service dict { unix_listener dict { mode = 0600 user = vmail } } service imap-login { process_limit = 10000 process_min_avail = 5 service_count = 0 vsz_limit = 2 G } service imap { process_limit = 2048 vsz_limit = 2 G } service lmtp { inet_listener lmtp { address = 127.0.0.1 port = 24 } } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { process_limit = 1024 process_min_avail = 3 service_count = 0 vsz_limit = 2 G } service pop3 { process_limit = 1024 } service stats { fifo_listener stats-mail { mode = 0600 user = vmail } } ssl_cert = </etc/ssl/local/my.mail.host.crt.pem ssl_key = </etc/ssl/local/my.mail.host.key.pem userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } verbose_proctitle = yes protocol lmtp { mail_plugins = quota notify mail_log fts quota sieve } protocol lda { mail_plugins = quota notify mail_log fts sieve } protocol imap { mail_max_userip_connections = 15 mail_plugins = quota notify mail_log fts imap_quota stats imap_stats } protocol pop3 { mail_max_userip_connections = 15 } # ------------ end dovecot -n ------------- So, here I am, out of ideas for the moment. Do you have any? -- kind regards, Jonathan

1 0

What happened to dovecot.fi?
by Pieter Koorts 01 Mar '16

01 Mar '16

Hi All, Any news about what happened to dovecot.fi ? Is enterprise or the S3 backend plugin still available? Reason for asking is every attempt to access the dovecot.fi website shows it as down and has done for a while. Pieter

2 1

Returning custom autoexpunge for user's INBOX
by Tom Johnson 01 Mar '16

01 Mar '16

I want to be able to have custom autoexpunge settings for different users. I have it working for various folders (draft, junk, trash), but I can't seem to get it working for the user's primary inbox. In my user_query (I'm using mysql), I'm returning entries like this in the userdb_import field: namespace/inbox/mailbox/autoexpunge=5d namespace/inbox/mailbox/Drafts/autoexpunge=5d namespace/inbox/mailbox/Junk/autoexpunge=5d namespace/inbox/mailbox/Trash/autoexpunge=5d And everything works fine for Drafts, Junk, and Trash, but not for the main inbox. The logs show: Debug: Unknown userdb setting: plugin/namespace/inbox/mailbox/autoexpunge=5d I've also tried variations, trying to get the namespace correct for the main inbox, but they all get the same "Unknown userdb setting" error: namespace/inbox/mailbox/autoexpunge=5d namespace/inbox/mailbox/inbox/autoexpunge=5d namespace/inbox/mailbox/Inbox/autoexpunge=5d namespace/inbox/mailbox/INBOX/autoexpunge=5d I suspect I'm just giving the wrong namespace for the primary inbox. What's the right way to do this? Tom

2 2

UnicodeData
by Vincent Dahmen 29 Feb '16

29 Feb '16

Hey guys, there seem to be a problem with wget and/or the unicode webserver. During the make process there are several files wich are download from the unicode server. I can access them manually but both curl and wget failing to get it. Are they any other mirrors or anyone else expiring this bug? Greetings

2 3

Re: sieve_extprograms - double linebreaks at filtering
by Hajo Locke 29 Feb '16

29 Feb '16

Hello, Am 09.09.2015 um 13:30 schrieb Stephan Bosch: > > > Op 9-9-2015 om 12:37 schreef Hajo Locke: >> Hello, >> >> >> Am 09.09.2015 um 11:26 schrieb Stephan Bosch: >>> >>> >>> Op 8-9-2015 om 13:10 schreef Hajo Locke: >>>> Hello List, >>>> >>>> i have a problem when using sieve-plugin sieve_extprograms. I use >>>> dovecot 2.2.18 and bundled pigeonhole 0.4.6 (Ubuntu 14.04.3 LTS) >>>> >>>> i have enabled sieve_extprograms and vnd.dovecot.filter to send >>>> mail to user-defined script and get changed content back. >>>> My script previously was used with procmail and is working fine. >>>> Using same script with vnd.dovecot.filter leads to odd behavior. >>>> I already found out the problem itself: >>>> By sending Mailcontent to filter-programm it seems that >>>> sieve/sieve_extprograms is adding additional linebreaks to every >>>> line of complete mail. >>>> Please see this image to clarify: >>>> http://r31i.imgup.net/header8d56.jpg?l=de >>>> Every lineending got additional windows-lineendings, which leads to >>>> problems with processing scripts. >>>> Piping mails by procmail to same script is working without >>>> problems, because this mails are recieved "clean" without the "^M". >>> >>> Well, the specified format for an internet message like e-mail has >>> CRLF line endings everywhere. That's why this happens now: >>> >>> http://hg.rename-it.nl/dovecot-2.2-pigeonhole/file/5df1b6d72ec2/src/plugins… >>> >>> >>> But maybe that is not such a good idea in a UNIX environment. I >>> think I can just make it configurable. >> >> ahh, there it is. i think just commenting out this line in my sources >> will result in some errors. Is there a possibility for me to make a >> quickfix in my sources? (use other function or something like that) > > You can replace it with the i_stream_create_lf() function, which > enforces LF rather than CR+LF, which would be what you need. Unfortunately i have to continue this issue. During my last updates this problem is occured again. This are my versions: # 2.2.21 (): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.11 (6ddf62b87f60+) # OS: Linux 3.13.0-77-generic x86_64 Ubuntu 14.04.4 LTS I tried to configure the linebreaks in my plugin section of /etc/dovecot/dovecot.conf by: sieve_extprograms_input_eol = lf But it seems to have no effect. Is this configured the right way or i have to use 0.4.12? Currently it looks like this: plugin { sieve = ~/sieve/.dovecot.sieve sieve_before = ~/sieve_before/.dovecot_before.sieve sieve_after = ~/sieve_after/.dovecot_after.sieve sieve_plugins = sieve_extprograms sieve_extensions = +vnd.dovecot.pipe +vnd.dovecot.filter +vnd.dovecot.execute +editheader sieve_pipe_bin_dir = /usr/local/bin/ sieve_filter_bin_dir = /usr/local/bin/ sieve_dir = ~/sieve sieve_global_dir = /etc/dovecot/sieve/ sieve_extprograms_input_eol = lf } > > Regards, > > Stephan. > > Thanks, Hajo

2 2

Queries are not being sent to solr when search on server issued via imap client.
by ralph.jones＠modolingo.de 29 Feb '16

29 Feb '16

I traced the network communication with the solr server with tcpdump: sudo tcpdump -i any -A -vvv port 8080 I logged into the imap server via telnet (actually openssl) and issued the command ". search body <string>". About 20 results were returned within about half a second. Nothing was seen in tcpdump. When I issue "doveadm search box <string>", I can see the search string in the output of tcpdump and also in the solr logs. Solr seems to have been initialized correctly, in that when I issue a query via curl, I receive the correct results. I am using: dovecot 2.2.13 (debian jessie) libsolr-java 3.6.2+dfsg-5 relevant config: mail_plugins = fts fts_solr acl virtual plugin { fts = solr fts_solr = url=http://localhost:8080/solr/ debug ... }

2 1

Dovecot sieve - How to check which username a mail is being delivered to?
by Yannik Sembritzki 27 Feb '16

27 Feb '16

Hi everyone, I am looking for a way to check which mailbox an email is being delivered to in a global sieve filter. After not being able to find some kind of variable that is populated by dovecot automatically, I tried to use the `Delivered-To` header. I tried a check like this: header :is "delivered-to" "<user(a)domain.org>" Unfortunately, this does not only match the first occurence of the header (which can be assumed is added by dovecot), but any occurence of this header in the email, which could be added due to previous deliveries and forwards, or just cause of malice. Is there any way to achieve this? Best regards, Yannik

2 3

Assertion crash: (idx * array->element_size < array->buffer->used)
by Joseph Tam 27 Feb '16

27 Feb '16

Log message: Traceback is hex gibberish: if symbolic traceback is needed, I'll recompile with "cc -g" and retest. Panic: file ../../../src/lib/array.h: line 219 (array_idx_i): assertion failed : (idx * array->element_size < array->buffer->used) (Similar to http://dovecot.org/pipermail/dovecot/2015-February/099771.html) IMAP command that provoked the crash: x1 FETCH 3 (BODY) Dovecot version: 2.2.19, Solaris10 (I don't think doveconf -n is relevant, but willing to provide if needed). It seems like a mailbox index issue. Removing, then recreating the indices gets rid of the crash. I saved these indices if it will help. Joseph Tam <jtam.home(a)gmail.com>

1 0

Different Quotas For Public Namespace
by Chris 26 Feb '16

26 Feb '16

Dear All, are different quotas for public namespace folders possible? They're in the same namespace. If I got it right, the wiki says there's one quota per namespace only? - Chris

2 2

Block public namespace mail when quota exceeded
by Chris 26 Feb '16

26 Feb '16

Dear All, is it possible to temporarily reject mails, when quota of public namespace subfolder is exceeded? I'd check folder size with a cronjob. Dovecot is using a system user, so I guess blocking post and insert in ACL isn't a solution? I don't want to set the folder to read-only, that users can still delete mails. Thank you in advance. - Chris

2 2

Question: Directory hashing to support large domains | Dovecot & MySQL
by Altin Ukshini 26 Feb '16

26 Feb '16

Hello there, I have a postfix + dovecot + mysql installation in an ubuntu server. Virtual users and domains in a small mysql db that I manage via a web based mailadmin I wrote myself. The mysql db I'm talking about has a qmail structure that used to be managed by qmailadmin and worked with vpopmail. As for information, I cannot move to a different structure (exc postfixadmin/postfix) for many reasons, so I was forced to stick with it and configure postfix and dovecot to read that structure... If you may know, qmail (depends on the configuration) uses a directory hashing like /home/vpopmail/DOMAIN/P/7/USERNAME (something similar) in order to manage large domains, and this is handled by vpopmail. Please refer to these two links for details: - http://free.acrconsulting.co.uk/email/qmh.html - https://sourceforge.net/p/vpopmail/mailman/message/2710408/ I saw that dovecot uses something similar which I found in dovecot documentation : http://wiki2.dovecot.org/MailLocation#Directory_hashing Unfortunately, I cannot find more details, so I'd be thankful if you help me out with the following: By reading the documentation, I can tell that I can use the dir hashing variables in my dovecot configuration. But, in my case, I get the directory path from my mysql db via dovecot sql user_query - not from mail_location variable in 10-mail.conf Therefore if in case of a first received email for a user: dovecot checks in the db, gets the path and creates the maildir from the given path. In case the maildir column is empty, it fails, and it also fails to authenticate... So, can dovecot write to mysql? I would like to use directory hashing of dovecot, but from what I can find: If dovecot has mail_location variable set to do the dir hashing, it will not then go and add the created path in my mysql db. While if I try to implement something similar from my web gui application, I'd probably have to rewrite the algorithm that does this!? Can anyone help me figure out what's the best way to implement this? Thank you very much in advance for your help! Best, Altin Ukshini

1 0

[Feature Request] doveadm option to return number of messages acted upon
by Haravikk 26 Feb '16

26 Feb '16

So I have a script for handling my specific archive and expunge needs, but it’d be nice to be able to track how many messages are being affected. Currently I’m doing it by firing the same search queries into doveadm search and counting the lines of the result with wc -l, but that’s not a very pretty solution. While I’m mostly doing it out of interest on a personal server, I can’t imagine it’s a very scalable way to do it if you wanted to gather some kind of metrics for example. What I think would make sense would be for relevant doveadm commands such as move, expunge (probably purge too) and others I haven’t thought of to have a new option that, if enabled, will cause the command to output the number of messages affected as the final line of output (most of these commands don’t have any output anyway). A doveadm count command could also be a convenient, more efficient, alternative to doveadm search | wc -l.

2 1

Replication between two ISPCOnfig servers
by Otto Saayman 26 Feb '16

26 Feb '16

Hello I have set up two servers, one master and one slave, using ISPConfig. I have been using rsync to synchronise mails between the two machines, but this has some unstable results. I had a look at setting up replication: http://wiki.dovecot.org/Replication When I run the command, doveadm user '*', only two users are returned. So when I run this command: doveadm replicator replicate \* I get: 2 users updated I run this command: doveadm sync -u [e-mail address] tcp:[2nd/ slave dovecot server IP address] Here I can input any valid e-mail address in the ISPConfig MySQL database and it works. How do I tell the dovecote server to replicate all the users configured in the MySQL database it uses when it handles logins via POP/ IMAP, all of which is working fine? Is there a command I need to run at a set interval via cron to synchronise the two machines' mailboxes, which are identical in every way except the mails the users' mailboxes contain? OR Is there a way that I can instruct the two machines to keep each other's user mailbox contents "up to date"? The main idea is to have a hot backup of my "main" dovecot server and also to enable a lower mail priority for the second server so that mails are still received when the main server becomes busy, or is taken offline for some reason. Any help, or link to a HOWTO would be appreciated. -- Best Regards Otto Saayman

2 1

Checking index sanity
by Emmanuel Dreyfus 25 Feb '16

25 Feb '16

Hello We experienced corrupted dovecot indexes, probably caused by a server crash. This does not cause a lot of harm, just annoyance. For instance, LMTP raises an assertion during delivery, which causes mail to multiple recipients e-mail to remain in the queue if a single of them hits a corrupted index. The workaround for now is to detect the situation in the logs and to remove corrupted indexes when the problem arise. A better fix would be to sanity check all user's index on startup. Is there a command line tool to do this? -- Emmanuel Dreyfus manu(a)netbsd.org

1 0

VS: Re: SQLite driver and auth-worker credentials
by Aki Tuomi 24 Feb '16

24 Feb '16

this is probably something that ought to be fixed. Read only scenario for auth/userdb is quite plausible. ---Aki TuomiDovecot oy-------- Alkuperäinen viesti --------Lähettäjä: Lev Serebryakov <lev(a)serebryakov.spb.ru> Päivämäärä: 24.2.2016 23.32 (GMT+02:00) Saaja: james(a)lottspot.com Kopio: dovecot(a)dovecot.org Aihe: Re: SQLite driver and auth-worker credentials Hello James, Wednesday, February 24, 2016, 11:17:12 PM, you wrote: >> But system should assign all secondary GIDs to effective UID? > separate 'group =' directive in addition to the 'user =' directive > (http://wiki2.dovecot.org/Services) Oh, I missed this one, thank you -- Best regards, Lev mailto:lev@serebryakov.spb.ru

1 0

SQLite driver and auth-worker credentials
by Lev Serebryakov 24 Feb '16

24 Feb '16

I want to use SQLite database as storage for auth and user databases. I've encountered two problems here: (1) There is no way to open SQLite database read-only (via sqlite3_open_v2() call with SQLITE_OPEN_READONLY flag). It looks bad. I don't need (and want) to give dovecot rights to write to this database. (2) I've created system group "hostingdb", added "dovecot" user to it and gives 660 rights to database file, but still "auth-worker" could not open database and complains to log file. Now I'm set "user = root" for auth-worker, but I don't like it! Why auth-worker doesn't belong to "hostingdb" group? -- // Black Lion AKA Lev Serebryakov

2 4

Script dovecot ACLs, Quota and doveadm
by Chris 24 Feb '16

24 Feb '16

Dear All, I'd like to set a) Quota for mailboxes in private and public namespace b) ACLs for both. What's the easiest way to do this? Do I have to call doveadm for every mailbox (private and public)? Is it required to provide a username to doveadm? Can I use the same user for all if it is defined in global ACLs? For Cyrus there are perl modules which have the same functions as cyradm. Is there something like this for dovecot? Are there any modules available? Haven't found anything in CPAN. - Chris

1 0

Streaming MOVE commands
by gallego＠cri.ensmp.fr 24 Feb '16

24 Feb '16

Dear Dovecot devs, is streaming multiple MOVE commands by clients allowed? I am getting duplicated messages with the GNUS mail client, the interchange looks like this: *stream two moves to different folders* > 9019 UID MOVE 4062,4066,4068 "folder0" > 9020 UID MOVE 4063:4064,4067,4069:4072 "folder1" *the messages are copied* > * OK [COPYUID 1424475218 4062,4066,4068 376:378] Moved UIDs. > * OK [COPYUID 1424475231 4063:4064,4067,4069:4072 26:32] Moved UIDs. *however expunge fails to clean 4063, 4064, and 4067* > * VANISHED 4062,4066,4068:4072 thus 4063, 4064, and 4067 end both in inbox and folder1 producing duplicate messages (more details at [1]). At the GNUS mailing list, we were wondering about what should be the correct reading of RFC6851. Version and config information below. Best regards, Emilio [1] More details in the thread http://permalink.gmane.org/gmane.emacs.gnus.general/86813 [2] Version $ /usr/sbin/dovecot --version 2.2.13 [3] Config $ /usr/sbin/dovecot -n # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 8.3 ext4 mail_location = maildir:/home/%u/Maildir managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap sieve" ssl_cert = ... ssl_key = ... userdb { driver = passwd }

3 6

Automatically inferring %d on multi-domain virtual install ?
by Gabriel L. Somlo 24 Feb '16

24 Feb '16

Hi, I'm trying to allow domain-less logins for a multi-domain virtual IMAP server, and wondering if I can automatically infer the domain (value of variable %d) from the local IP (%l) or the hostname used by the client when connecting to my server. Let's say I have two host names: mail.foo.org (10.0.0.100) and mail.bar.com (10.0.0.200), with forward and reverse DNS configured to resolve A and PTR records in either direction. Let's also say I have 10.0.0.100 and 10.0.0.200 set up as secondaries on my server's loopback interface, and routing is set up to bring client traffic to me for both of those IP addresses. The relevant bits of my dovecot.conf are: ---%<------------------------------------------------------------------ mail_location = maildir:/var/lib/vmail/%d/%n passdb { driver = passwd-file args = /var/lib/vmail/etc/postfix/userdb } userdb { driver = static args = uid=dovenull gid=dovenull home=/var/lib/vmail/%d/%n } ---%<------------------------------------------------------------------ And my userdb passwd-file right now includes: ---%<------------------------------------------------------------------ user1@foo.org:{PLAIN}user1foo user2@foo.org:{PLAIN}user2foo user1@bar.com:{PLAIN}user1bar user2@bar.com:{PLAIN}user2bar ---%<------------------------------------------------------------------ Right now, user1(a)foo.org must configure their imap client like so: IMAP server: mail.foo.org username: user1(a)foo.org password: user1foo I would like to require this (and other) users to only have to set: IMAP server: mail.foo.org username: user1 password: ... and have dovecot somehow infer the "@foo.org" domain based on the fact that the connection was made to 10.0.0.100, which is mail.foo.org, and therefore the domain can *only* be "@foo.org". I could start out by splitting my user database into two files: userdb.foo.org ---%<------------------------------------------------------------------ user1:{PLAIN}user1foo user2:{PLAIN}user2foo ---%<------------------------------------------------------------------ userdb.bar.com ---%<------------------------------------------------------------------ user1:{PLAIN}user1bar user2:{PLAIN}user2bar ---%<------------------------------------------------------------------ ... then modify dovecot.conf's passdb setup like so: ---%<------------------------------------------------------------------ passdb { driver = passwd-file args = /var/lib/vmail/etc/postfix/userdb.%d } ---%<------------------------------------------------------------------ ... but how would I insure that %d is set to the proper value based on e.g. a reverse lookup of %l, which, in foo.org's case would be 10.0.0.100, and resolve to mail.foo.org, and *somehow* that would match %d == "@foo.org" ? Is this even possible in the first place, or am I just being too fussy about the aesthetics of my users' imap client config files ? :) :) Thanks much, --Gabriel

5 9

Dovecot + Ceph Cluster Sizing
by Michele Soragni 24 Feb '16

24 Feb '16

Hi all. We are searching for information about how to size dovecot servers in a clustered architecture (dovecot + postfix + roundcube + mysql). We need to migrate mailboxes from an old Exchange installation: 60k mailbox 900 GB total storage 14 MB/mailbox About 133 email/mailbox Low usage: about 2k simultaneous imap/pop3 connections This is how we are thinking to build our new architecture 3 x Dell R630 or R530 servers with 6x300SAS disks for Ceph storage with 1 replica . Total storage = 2,5 TB for mailboxes 3 x Dell R630 or R530 with 2x CPU 6core,64GB RAM, 4x 300SAS disks hosting the following VMs in a VMware cluster: - 3 x VM Dovecot - 3 x VM Postfix - 3 x VM Roundcube webmail - 3 x VM MySQL All VMs are behind a balancer All OS disks are on local storage Dovecot VMs share Ceph storage with OCFS2 filesystem for the mailboxes. I'd like to have some hints about CPU and memory for Dovecot VMs. 2 vCPU and 8 GB RAM each sould be enough? Is there a way to calculate this? Do you think the storage performance could be a problem using Ceph + OCFS2? Is Ceph + XFS + Dsync replication a better choice? Thanks! Michele

1 0

Segfault using doveadm dsync
by fabio.onorini＠secoges.com 24 Feb '16

24 Feb '16

I'm trying to migrate a imap mailbox from dovecot 1.2.15 to a new imap server with dovecot 2.2.13. I would preserving the IMAP UIDs and POP3 UIDLs. So I'm using doveadm backup command but after folders analyze, command return segmentation fault. Any hint? GDB result: sync(easymail): Debug: brain S: Deleting mailbox 'Bozze' (GUID f0836f3222c335cfa383cb38ff0e3183): UIDNEXT is too high (9 > 1) dsync(easymail): Debug: brain S: Deleting mailbox 'Cestino' (GUID cd0edec22e40323d878a39dc8e432e5a): UIDNEXT is too high (628 > 1) dsync(easymail): Debug: brain S: Deleting mailbox 'INBOX' (GUID c92f64f79f0d1ed01e6d5b314f04886c): UIDVALIDITY changed (1456239585 -> 1456310264) dsync(easymail): Debug: brain S: Deleting mailbox 'Modelli' (GUID f0933f8b90e6eaf3a00a0220b173f3b4): UIDNEXT is too high (2 > 1) dsync(easymail): Debug: brain S: Deleting mailbox 'Sent' (GUID 7d3c7eaa71cdf47ee8a1192687cda8cd): UIDNEXT is too high (39 > 1) Program received signal SIGSEGV, Segmentation fault. imapc_client_mailbox_cmd (box=0x0, callback=callback@entry=0x7ffff76d7140 <imapc_simple_callback>, context=context@entry=0x7fffffffe2d0) at imapc-client.c:351 351 imapc-client.c: No such file or directory. (gdb) bt full #0 imapc_client_mailbox_cmd (box=0x0, callback=callback@entry=0x7ffff76d7140 <imapc_simple_callback>, context=context@entry=0x7fffffffe2d0) at imapc-client.c:351 cmd = <optimized out> __FUNCTION__ = "imapc_client_mailbox_cmd" #1 0x00007ffff76d7915 in imapc_mailbox_noop (mbox=mbox@entry=0x5555558049e0) at imapc-storage.c:154 cmd = <optimized out> sctx = {client = 0x5555557e89b0, ret = -2} #2 0x00007ffff76d5c18 in imapc_mailbox_sync_init (box=0x5555558049e0, flags=(MAILBOX_SYNC_FLAG_FULL_READ | MAILBOX_SYNC_FLAG_FIX_INCONSISTENT)) at imapc-sync.c:476 mbox = 0x5555558049e0 list = <optimized out> capabilities = <optimized out> changes = false ret = 0 #3 0x00007ffff76e9289 in mailbox_sync_init (box=0x5555558049e0, flags=(MAILBOX_SYNC_FLAG_FULL_READ | MAILBOX_SYNC_FLAG_FIX_INCONSISTENT)) at mail-storage.c:1677 _data_stack_cur_id = 3 ctx = <optimized out> #4 0x00007ffff76e93d7 in mailbox_sync (box=box@entry=0x5555558049e0, flags=<optimized out>, flags@entry=MAILBOX_SYNC_FLAG_FULL_READ) at mail-storage.c:1725 ctx = 0x555555804ea8 status = {sync_delayed_expunges = 0} #5 0x00007ffff7715bab in mailbox_expunge_all_data (box=0x5555558049e0) at index-storage.c:648 ctx = 0x7ffff7714e57 <index_storage_mailbox_open+615> t = 0x5555558049e0 mail = 0x7fffffffe4b4 search_args = 0x7fffffffe558 #6 index_storage_mailbox_delete (box=0x5555558049e0) at index-storage.c:701 metadata = {guid = "\264\344\377\377\377\177\000\000\000\000\000\000\000\000\000", virtual_size = 140737488348504, cache_fields = 0x555555807258, precache_fields = (MAIL_FETCH_RECEIVED_DATE | MAIL_FETCH_SAVE_DATE | MAIL_FETCH_PHYSICAL_SIZE | MAIL_FETCH_VIRTUAL_SIZE | MAIL_FETCH_IMAP_ENVELOPE | MAIL_FETCH_REFCOUNT | unknown: 1426065408), backend_ns_prefix = 0x7ffff73b1e59 <t_pop_check+9> ";\003u\v\307\003", backend_ns_type = (unknown: 1434470880)} status = {messages = 4294960472, recent = 32767, unseen = 0, uidvalidity = 0, uidnext = 1434582544, first_unseen_seq = 0, first_recent_uid = 232594432, last_cached_seq = 3612951791, highest_modseq = 93824995052000, highest_pvt_modseq = 93824992578308, keywords = 0x1, permanent_flags = 4151223616, permanent_keywords = 1, allow_new_keywords = 1, nonpermanent_modseqs = 1, no_modseq_tracking = 1, have_guids = 1, have_save_guids = 1, have_only_guid128 = 1} ret_guid = <optimized out> #7 0x00007ffff76ea737 in mailbox_delete (box=box@entry=0x5555558049e0) at mail-storage.c:1319 ret = <optimized out> #8 0x00005555555895d4 in dsync_brain_mailbox_tree_sync_change (brain=brain@entry=0x5555557fcd00, change=<optimized out>) at dsync-brain-mailbox-tree-sync.c:182 box = 0x5555558049e0 destbox = 0x5555558007c8 errstr = 0x5555557ff750 "\030\366\177UUU" func_name = 0x0 ---Type <return> to continue, or q <return> to quit--- storage_name = <optimized out> error = 32767 ret = <optimized out> __FUNCTION__ = "dsync_brain_mailbox_tree_sync_change" #9 0x00005555555892db in dsync_brain_mailbox_trees_sync (brain=0x5555557fcd00) at dsync-brain-mailbox-tree.c:291 ctx = 0x55555580ab40 change = <optimized out> sync_type = <optimized out> sync_flags = <optimized out> #10 dsync_brain_recv_mailbox_tree_deletes (brain=brain@entry=0x5555557fcd00) at dsync-brain-mailbox-tree.c:440 deletes = 0x5555557fa0a0 i = <optimized out> count = 0 sep = 47 '/' __FUNCTION__ = "dsync_brain_recv_mailbox_tree_deletes" #11 0x00005555555860e8 in dsync_brain_run_real (changed_r=0x7fffffffe74b, brain=0x5555557fcd00) at dsync-brain.c:565 ret = true orig_state = DSYNC_STATE_RECV_MAILBOX_TREE_DELETES orig_box_recv_state = DSYNC_BOX_STATE_MAILBOX orig_box_send_state = DSYNC_BOX_STATE_MAILBOX changed = false #12 dsync_brain_run (brain=0x5555557fcd00, changed_r=changed_r@entry=0x7fffffffe74b) at dsync-brain.c:610 _data_stack_cur_id = 2 changed_r = 0x7fffffffe74b brain = 0x5555557fcd00 #13 0x00005555555846f7 in cmd_dsync_run_local (changes_during_sync_r=<synthetic pointer>, ibc2=<optimized out>, brain=0x5555557e1860, user=<optimized out>, ctx=0x5555557cd590) at doveadm-dsync.c:384 brain2 = 0x5555557fcd00 set_parser = <optimized out> location = <optimized out> user2 = 0x0 brain1_running = true changed1 = true ret = <optimized out> set_line = <optimized out> brain2_running = true changed2 = false #14 cmd_dsync_run (_ctx=0x5555557cd590, user=<optimized out>) at doveadm-dsync.c:596 ---Type <return> to continue, or q <return> to quit--- ctx = 0x5555557cd590 ibc = 0x5555557d50d0 ibc2 = 0x5555557e14d0 brain = 0x5555557e1860 set = {process_title_prefix = 0x0, sync_namespaces = {arr = {buffer = 0x5555557c0378, element_size = 8}, v = 0x5555557c0378, v_modifiable = 0x5555557c0378}, sync_box = 0x0, sync_box_guid = '\000' <repeats 15 times>, exclude_mailboxes = 0x0, lock_timeout_secs = 0, state = 0x0} ns = 0x5555557cd670 strp = <optimized out> brain_flags = <optimized out> remote_errors_logged = false changes_during_sync = false status = 0 ret = 0 #15 0x0000555555569e4b in doveadm_mail_next_user (ctx=0x5555557cd590, input=<optimized out>, error_r=0x7fffffffe898) at doveadm-mail.c:314 error = 0x5555557cd590 "p\325|UUU" ret = <optimized out> error_r = 0x7fffffffe898 input = <optimized out> ctx = 0x5555557cd590 ip = <optimized out> ret = 0 #16 0x000055555556ac2c in doveadm_mail_cmd (argv=0x5555557c73b8, argc=4, cmd=0x5555557cb140) at doveadm-mail.c:525 input = {module = 0x0, service = 0x5555555a7367 "doveadm", username = 0x5555557c73e7 "easymail", session_id = 0x0, local_ip = {family = 0, u = {ip6 = { __in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}}, remote_ip = {family = 0, u = {ip6 = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}}, local_port = 0, remote_port = 0, userdb_fields = 0x0, flags_override_add = (unknown: 0), flags_override_remove = (unknown: 0), no_userdb_lookup = 0} ctx = 0x5555557cd590 getopt_args = 0x5555557bf660 "+1dEfg:l:m:n:NPr:Rs:Ux:RAS:u:" ret = <optimized out> c = <optimized out> wildcard_user = 0x0 error = 0x7ffff73b7122 <master_service_init_finish+226> "H\213\204$\230" #17 doveadm_mail_try_run (cmd_name=<optimized out>, argc=4, argv=0x5555557c73a0) at doveadm-mail.c:617 cmd = 0x5555557cb140 #18 0x00005555555699a4 in main (argc=4, argv=0x5555557c73a0) at doveadm.c:398 cmd_name = 0x5555557c73dd "backup" i = <optimized out> ---Type <return> to continue, or q <return> to quit--- quick_init = false c = <optimized out> ----------------------------------------------- Fabio Onorini ----------------------------------------------- Gruppo SeCoGes srl Via Enzo Ferrari, 4/6 - 25134 - Brescia - Italy Tel. +39 030 23 06 877 Fax +39 030 23 15 512 Sito Web: http://www.secoges.com Indirizzo EMail (assistenza): easymail(a)secoges.com ------------------------------------------------

1 0

Require different setting for mail_location for each of POP3S and IMAPS protocols
by Andrew McGlashan 23 Feb '16

23 Feb '16

Okay, Let's try this a different way. I've been able to configure past dovecot to have a different mail_location setting for the same user, but with different protocols. When the user requests POP3S, I adjusted the mail_location to /var/mail/$USER (with mbox in use). When that *same* user requested IMAPS protocol, the required mail_location is the Maildir folder. This allows for independent two mail storage locations, one for the use of mbox and the other for the use of Maildir *and* for the same user. Some users only require mbox with others only requiring Maildir. So, I need to cater for each of these situations. How might I adjust current dovecot configuration to provide different mail_location settings for different protocols? Old dovecot allowed me to run a script before POP3S processing that gave me the chance to adjust the mail_location variable. That is what I need now, just for POP3S. Thanks AndrewM

2 2

syntax for overriding userdb fields from passdb config
by Thomas Möhle 23 Feb '16

23 Feb '16

Dear Dovecot developers, how exactly is the syntax to override a userdb field within the passdb configuration? I cannot find any documentation on this in the wiki. Let's say, I'd like to override the userdb extra field "chroot" with /var/mail. How exactly would be the notation? My auth-sql.conf.ext looks like this: passdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext } userdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext } I already tried these modifications within the passdb area: override_fields = userdb_chroot=/var/mail override_fields = userdb:chroot=/var/mail override_fields = %{userdb:chroot}=/var/mail override_fields = %{userdb_chroot}=/var/mail but none of the above returned /var/mail when I tried to hand %{userdb:chroot} to an external script. Thanks for your help, Thomas Möhle

2 1

RE: Dovecot Bulletin
by Kevin Kershner 23 Feb '16

23 Feb '16

It also got the bulletin out to new users without admin intervention. Sent from Mobile ________________________________ From: Doug Hardie<mailto:bc979@lafn.org> Sent: ‎2/‎22/‎2016 4:02 To: Dovecot Mailing List<mailto:dovecot@dovecot.org>; Timo Sirainen<mailto:tss@iki.fi> Cc: Kevin Kershner<mailto:cstkersh@outlook.com> Subject: Re: Dovecot Bulletin > On 20 February 2016, at 18:14, Timo Sirainen <tss(a)iki.fi> wrote: > > On 21 Feb 2016, at 02:50, Kevin Kershner <cstkersh(a)outlook.com> wrote: >> >> I'd like to revisit and old post if I may, will/does Dovecot support the old >> qpopper "Bulletin" ability? >> >> Basically I need a simple way of posting bulletins to all domain users. >> Qpopper maintained a bulletin db for each user and sent them the next >> bulletin in sequence. > > I guess there could be a plugin that does this check on each login. But would it actually be useful? Why would it be better than simply sending the mail to all the users? For example: > > doveadm save -A < bulletin.txt The reasons for bulletins as I see it are: 1. The doveadm save command is undocumented. It does show a cryptic line in the output of the command "doveadm". However, it doesn't give any clue what it does or how to provide the message. Your note above provides considerably more information on that command. I tested it and it works as you have indicated though. 2. The doveadm save command causes the email to be saved in each user's mailbox. If you have a lot of users, thats a lot of wasted disk space. Qpopper's bulletins only kept one copy and every user downloaded from that copy. All that was retained per user was a counter of the last bulletin's sequence number that was downloaded. — Doug

3 3

systemd changes in Git/Debian Auto-Builds
by Thomas Leuxner 22 Feb '16

22 Feb '16

Not sure if the issue is limited to the Debian Auto-Builds, but after the latest commits an update of the packages fails: https://github.com/dovecot/core/commit/53cc71cae88ee81fd7eae47aed743496f8c8… Feb 21 07:31:22 nihlus dovecot: master: Dovecot v2.2.devel (950a6e6) starting up for imap, lmtp Feb 21 07:31:22 nihlus systemd[1]: PID file /var/run/dovecot/dovecot/master.pid not readable (yet?) after start. The PID-File seems to be expected under yet another sub-dir of /var/run/dovecot. Regards Thomas

8 14

Dovecot Bulletin
by Kevin Kershner 22 Feb '16

22 Feb '16

I'd like to revisit and old post if I may, will/does Dovecot support the old qpopper "Bulletin" ability? Basically I need a simple way of posting bulletins to all domain users. Qpopper maintained a bulletin db for each user and sent them the next bulletin in sequence. Thanks in advance Kevin

3 3

User@domain.tld doesn't exist (postfix error 550 5.1.1)
by soko.tica 22 Feb '16

22 Feb '16

Hello list, I am trying to send an e-mail message from the local root to another local user (alias to root) on the same box. While it functions without dovecot, it doesn't work with dovecot installed. Local user is recognized, but local user(a)domain.tld isn't. While this option is turned on in postfix, I believe it has something with dovecot configuration, due to doveadm isnt' able to recognise user(a)domain.tld Bellow are the outputs of doveadm user username, doveadm user username(a)domain.tld, doveconf -n, tail -f /var/log/mail.log, cat /etc/aliases and postconf -n. Please advise. Thanks in advance. # doveadm user testuser field value uid 1000 gid 1000 home /home/testuser mail maildir:~/Maildir system_groups_user testuser ======================================== # doveadm user testuser(a)mail.domain.tld field valueuserdb lookup: user testuser(a)mail.domain.tld doesn't exist ====================================== # doveadm user testuser(a)domain.tld field valueuserdb lookup: user testuser(a)domain.tld doesn't exist ======================================= # doveconf -n # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.18.26-x1-64 x86_64 Debian 8.3 hostname = mail.domain.tld lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lda_original_recipient_header = X-Original-To lmtp_save_to_detail_mailbox = yes mail_location = maildir:~/Maildir maildir_very_dirty_syncs = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = separator = / type = private } passdb { driver = pam } passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = postmaster(a)mail.domain.tld protocols = lmtp service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } ssl = no ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { driver = passwd } userdb { driver = passwd } protocol lmtp { mail_fsync = optimized } protocol lda { mail_fsync = optimized } =============================== # tail -f /var/log/mail.log Feb 22 13:21:01 uidigaa4 postfix/qmgr[4657]: 75E0722137: removed Feb 22 13:21:01 uidigaa4 dovecot: lmtp(4764): Connect from local Feb 22 13:21:01 uidigaa4 postfix/lmtp[4763]: 82EA222140: to=<testuser(a)mail.domain.tld>, orig_to=<root(a)mail.domain.tld>, relay=mail.domain.tld[private/dovecot-lmtp], delay=0.01, delays=0/0/0.01/0, dsn=5.1.1, status=bounced (host mail.domain.tld[private/dovecot-lmtp] said: 550 5.1.1 <testuser(a)mail.domain.tld> User doesn't exist: testuser(a)mail.domain.tld (in reply to RCPT TO command)) Feb 22 13:21:01 uidigaa4 dovecot: lmtp(4764): Disconnect from local: Successful quit Feb 22 13:21:01 uidigaa4 postfix/qmgr[4657]: 82EA222140: removed ======================= # cat /etc/aliases # See man 5 aliases for format postmaster: root root: testuser =================== # postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no config_directory = /etc/postfix delay_warning_time = 4h inet_interfaces = all mailbox_size_limit = 0 mailbox_transport = lmtp:unix:private/dovecot-lmtp mydestination = $myhostname localhost.$mydomain localhost $mydomain mydomain = domain.tld myhostname = mail.domain.tld mynetworks = [::ffff:127.0.0.0]/104 [::1]/128 myorigin = $myhostname notify_classes = resource, software readme_directory = no recipient_delimiter = + relay_domains = $mydestination relay_transport = error smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes

1 1

Replication for all users in Dovecot ISPConfig database
by Otto Saayman 22 Feb '16

22 Feb '16

Hello I have set up two servers, one master and one slave, using ISPConfig. I have been using rsync to synchronise mails between the two machines, but this has some unstable results. I had a look at setting up replication: http://wiki.dovecot.org/Replication When I run the command, doveadm user '*', only two users are returned. So when I run this command: doveadm replicator replicate \* I get: 2 users updated I run this command: doveadm sync -u [e-mail address] tcp:[2nd/ slave dovecot server IP address] Here I can input any valid e-mail address in the ISPConfig MySQL database and it works. How do I tell the dovecote server to replicate all the users configured in the MySQL database it uses when it handles logins via POP/ IMAP, all of which is working fine? Is there a command I need to run at a set interval via cron to synchronise the two machines' mailboxes, which are identical in every way except the mails the users' mailboxes contain? OR Is there a way that I can instruct the two machines to keep each other's user mailbox contents "up to date"? The main idea is to have a hot backup of my "main" dovecot server and also to enable a lower mail priority for the second server so that mails are still received when the main server becomes busy, or is taken offline for some reason. Any help, or link to a HOWTO would be appreciated. -- Best Regards *Otto Saayman* /IT Guru and/ /Owner/ *Mobile: E-mail: Skype: Web:* +27 82 821 9119 otto(a)igotafrica.com ozzmaster80 www.igotafrica.com <http://www.igotafrica.com/> “/We can do anything, but we can't do everything./” - John Maxwell Confidentiality notice and disclaimer: This message and the attached files and links contain information intended for the exclusive perusal and/or use, of the addressee only. The information may be confidential and legally privileged and protected by law. Access is authorised only by the intended recipient. If you are not an intended recipient, do not peruse, use, disseminate, distribute, copy or in any manner rely upon the information contained in this message or the attached files (directly or indirectly). The sender and/or IgotAfrica CCshall not be held liable for any loss damage, injury, or expense however caused, whether direct, indirect or consequential in the event that this prohibition is disregarded. If you receive this message and/or the attached files in error, please notify the sender immediately by email, fax or telephone and destroy the original message. The views or representations contained in this communication, whether expressed or implied, are those of the sender only. IgotAfrica CCand the sender do not warrant the truth, integrity, accuracy or completeness of the information provided, or that the message and attached files are free of errors, virus, interception or interference.

1 0

postfix/dovecot - [private/dovecot-lmtp]: No such file or directory
by soko.tica 22 Feb '16

22 Feb '16

Hello list, I am trying to send a mail message from root to a system user on the same box. While postfix functions without dovecot properly, once dovecot is installed, I get the message from logs as set in the subject line - that postfix/lmpt cannot connect to [private/dovecot-lmtp]: No such file or directory Also, user's ~/.Maildir aren't created, although there is such instructions in dovecot. Finally, doveconf -n says there is no ssl enabled, although I explicitly set it in /conf.d/10-ssl.conf Below are dmesg, postconf -n, doveconf -n and a snippet from /var/log/mail.log Please advise. Thanks in advance. $dmesg [ 0.000000] Linux version 3.18.26-x1-64 (root(a)dev0001.support.domain.tld) (gcc version 4.4.5 (Debian 4.4.5-8) ) #1 SMP Mon Feb 8 11:43:41 GMT 2016 [ 0.740773] pps_core: LinuxPPS API ver. 1 registered ================ $ postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no config_directory = /etc/postfix default_transport = error delay_warning_time = 4h inet_interfaces = loopback-only mailbox_size_limit = 0 mailbox_transport = lmtp:unix:private/dovecot-lmtp mydestination = $myhostname localhost.$mydomain localhost $mydomain myhostname = mail.domain.tld mynetworks = [::ffff:127.0.0.0]/104 [::1]/128 myorigin = $myhostname notify_classes = resource, software readme_directory = no recipient_delimiter = + relay_domains = $mydestination relay_transport = error smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes ========================== $ doveconf -n # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.18.26-x1-64 x86_64 Debian 8.3 hostname = mail.domain.tld lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lda_original_recipient_header = X-Original-To mail_location = maildir:~/Maildir maildir_very_dirty_syncs = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = separator = / type = private } passdb { driver = pam } passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = postmaster(a)mail.domain.tld protocols = lmtp service lmtp { unix_listener lmtp { group = postfix mode = 0600 user = postfix } } ssl = no ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { driver = passwd } userdb { driver = passwd } protocol lmtp { mail_fsync = optimized } protocol lda { mail_fsync = optimized } ============== $ cat /var/log/mail.log Feb 21 23:20:40 boxname dovecot: master: Dovecot v2.2.13 starting up for lmtp (core dumps disabled) Feb 21 23:22:28 boxname postfix/pickup[32138]: EA06822140: uid=0 from=<root> Feb 21 23:22:28 boxname postfix/cleanup[32177]: EA06822140: message-id=<20160221232228.EA06822140(a)mail.domain.tld> Feb 21 23:22:28 boxname postfix/qmgr[32139]: EA06822140: from=<root(a)mail.domain.tld>, size=333, nrcpt=1 (queue active) Feb 21 23:22:29 boxname postfix/lmtp[32180]: EA06822140: to=<brn(a)mail.domain.tld>, orig_to=<brn>, relay=none, delay=0.06, delays=0.02/0.01/0.04/0, dsn=4.4.1, status=deferred (connect to mail.domain.tld[private/dovecot-lmtp]: No such file or directory)

2 1

Maildir++ and fs-layout
by Chris 20 Feb '16

20 Feb '16

Dear All, can I use Maildir++ Layout for private namespace and fs-layout for public namespace on the same server, provided that the hierarchy separator is the same (.)? Are all parts of dovecot (especially deliver, sieve and lmtp) compatible with fs-layout? Are there any restrictions I have to obey? - Chris

2 2

pigeonhole vnd.dovecot.pipe
by Dan Ragle 20 Feb '16

20 Feb '16

Ok, I have pigeonhole setup on my CentOS 6 box and it's working great; the filters are doing almost everything I want them to. I now find that I'd like to add piping support to pigeonhole scripts, and as I am running CentOS 6 (Dovecot 2.0.9, with pigeonhole 0.2.2) I'm trying to get the vnd.dovecot.pipe extension working. Couldn't find that anywhere in the repos, so went to the source as explained on this page: http://wiki2.dovecot.org/Pigeonhole/Sieve/Plugins/Pipe But I'm not able to get it to work. Here's what I've tried so far: 1.) Installed dovecot-devel-2.0.9 (yum install dovecot-devel) 2.) Downloaded the sieve-pipe source (hg clone http://hg.rename-it.nl/pigeonhole-0.2-sieve-pipe/) 3.) In the new sieve-pipe directory: a.) ./autogen.sh (appeared to go smoothly) b.) ./configure --with-dovecot=/usr/lib64/dovecot --with-pigeonhole=/usr/include/dovecot/sieve (again, ok) c.) make This one failed, complaining that sieve-ext-copy.h was unavailable. Found a copy of the file online at http://www.opensource.apple.com/source/dovecot/dovecot-239/dovecot-pigeonho… copied it into /usr/include/dovecot/sieve/ and reran the make, this time no errors. d.) make install (no errors) 4.) Added the sieve_plugins = sieve_pipe config into 90-sieve.conf 5.) Restarted dovecot. It complained thus: Starting Dovecot Imap: managesieve: Fatal: opendir(/usr/lib64/dovecot/sieve) failed: No such file or directory doveconf: Error: managesieve-login: dump-capability process returned 89 6.) Looking through the make install output, I noticed that the new libs had been installed in /usr/local/lib/dovecot/sieve. So, cd /usr/lib64/dovecot ln -s /usr/local/lib/dovecot/sieve sieve 7.) Restarted dovecot. This time a different complaint: Starting Dovecot Imap: managesieve: Error: dlopen(/usr/lib64/dovecot/sieve/lib90_sieve_pipe_plugin.so) failed: /usr/lib64/dovecot/sieve/lib90_sieve_pipe_plugin.so: undefined symbol: uni_utf8_to_ucs4_n managesieve: Fatal: Couldn't load required plugins doveconf: Error: managesieve-login: dump-capability process returned 89 And now without digging into code I'm stuck. I'm guessing I have some incompatibility issues. Do I need to be running the 32bit dovecot for this to work? Or is there some other mismatch or misstep I've made along the way? Was I correct in assuming the necessary dovecot-pigeonhole-devel stuph came with the dovecot-devel install? There is no separate dovecot-pigeonhole-devel package in the main repos (the dovecot-pigeonhole package I have loaded is 2.0.9, looks like it was just named to match the corresponding dovecot package. The version appears to be 0.2.2, as it is adding a X-Sieve: Pigeonhole Sieve 0.2.2 header into redirected messages). Thanks! Dan

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RPMs for Fedora and RHEL/CentOS
by Toooode 20 Feb '16

20 Feb '16

Hi Link on http://www.dovecot.org/download.html for RPMs for Fedora and RHEL/CentOS is not working. It seams that atrpms repo is dead for some time now Can you please update this and suggest me alternative trusted repo with newest dovecot packages for RHEL/CentOS? Thank you

4 6

Bug Report: %% variables not expanded properly with shared namespace using . as separator
by Hugh Bragg 19 Feb '16

19 Feb '16

I think this is a bug. I'd expect that location %% variables are translated the same way % variables are interpreted, but apparently this isn't the case. virtual folders work fine, but my shared folders fail because of the . in the domain name. What I get is the following: # doveadm acl debug -u user1(a)domain1.com.au shared.user2(a)domain2.com.au doveadm(user1(a)domain1.com.au): Error: Mailbox 'com.au' in namespace 'shared.user2@domain2.' doesn't exist in /var/mail/vhosts/domain2/user2/mail/.com.au I know there is a similar report for usernames, but these should be interpreted at the top level and not inside the maildir. I hope this is enough info. Let me know if I can supply any further information. Hugh Here is my config: # dovecot -n # 2.2.21 (5345f22): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.11 (6ddf62b87f60+) # OS: Linux 4.3.5-300.fc23.x86_64 x86_64 Fedora release 23 (Twenty Three) auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb imap_client_workarounds = tb-extra-mailbox-sep listen = * log_path = /var/log/dovecot.log mail_access_groups = mail, vmail mail_home = /var/mail/vmail/%d/%n mail_location = maildir:~/mail mail_plugins = virtual, acl managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } namespace others { list = children location = maildir:/var/mail/vhosts/%%d/%%n/mail:INDEX=/var/mail/vhosts/%d/%n/shared/%%u prefix = shared.%%u. separator = . subscriptions = yes type = shared } namespace virtual { location = virtual:/var/mail/vhosts/%d/%n/virtual prefix = virtual. separator = . } passdb { args = scheme=PLAIN username_format=%u /etc/dovecot/dovecot-users driver = passwd-file } plugin { acl = vfile acl_shared_dict = file:/var/mail/vhosts/shared-mailboxes.db sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /var/mail/vhosts/sieve-global } protocols = imap lmtp sieve service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 0 ssl = yes } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } ssl = required ssl_cert = </etc/pki/dovecot/certs/hjbmx.ddns.net.cert.pem ssl_cipher_list = PROFILE=SYSTEM ssl_key = </etc/pki/dovecot/private/hjbmx.ddns.net.key.pem userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } protocol lmtp { mail_plugins = virtual, acl , sieve } protocol lda { mail_plugins = virtual, acl , sieve } protocol imap { mail_plugins = virtual, acl , imap_acl }

2 2

edit ACL files
by Chris 19 Feb '16

19 Feb '16

Dear All, is it possible to edit ACL files regularly with an editor or is there any reason to use doveadm? - Chris

4 5

shared folders not working with . separator
by Hugh Bragg 18 Feb '16

18 Feb '16

Hi, I've been trying this for weeks and never managed to get my mail client to see shared folders. Apparently imap_acl works fine as I can see these entries in the dovecot-acl-list files and the correct entries persist in the client. This is my first dovecot setup so I hope I've configured it right. Everything else works beautifully, thanks. # dovecot -n # 2.2.21 (5345f22): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.11 (6ddf62b87f60+) # OS: Linux 4.3.5-300.fc23.x86_64 x86_64 Fedora release 23 (Twenty Three) auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb imap_client_workarounds = tb-extra-mailbox-sep listen = * log_path = /var/log/dovecot.log mail_access_groups = mail, vmail mail_home = /var/mail/vmail/%d/%n mail_location = maildir:~/mail mail_plugins = virtual, acl managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart mbox_write_locks = fcntl namespace { location = virtual:/var/mail/vhosts/%d/%n/virtual prefix = virtual. separator = . } namespace { list = children location = maildir:/var/mail/vhosts/%%d/%%n/mail:INDEX=/var/mail/vhosts/%d/%n/shared/%%u:CONTROL=/var/mail/vhosts/%d/%n/shared/%%u prefix = shared.%%u. separator = . subscriptions = yes type = shared } namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } mailbox virtual/All { comment = All my messages special_use = \All } mailbox virtual/Flagged { comment = All my flagged messages special_use = \Flagged } prefix = } passdb { args = scheme=PLAIN username_format=%u /etc/dovecot/dovecot-users driver = passwd-file } plugin { acl = vfile acl_shared_dict = file:/var/mail/vhosts/shared-mailboxes.db sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /var/mail/vhosts/sieve-global } protocols = imap lmtp sieve service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 0 ssl = yes } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.cert.pem ssl_cipher_list = PROFILE=SYSTEM ssl_key = </etc/pki/dovecot/private/dovecot.key.pem userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } protocol lmtp { mail_plugins = virtual, acl , sieve } protocol lda { mail_plugins = virtual, acl , sieve } protocol imap { mail_plugins = virtual, acl , imap_acl }

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Re: dovecot Digest, Vol 154, Issue 14
by Richard Platel 18 Feb '16

18 Feb '16

Thanks, Hajo This mostly works, but we can’t seem to send an arbitrary mailbox name with UserDB, we have to initialize it in the config: "namespace/inbox/mailbox=Junk namespace/inbox/mailbox/Junk/name"="Spam" seems to initialize the folder somehow so that the subsequent "namespace/inbox/mailbox/Junk/auto"="subscribe" and "namespace/inbox/mailbox/Junk/special_use"="\Junk" have something to act upon. (the first line doesn't work quite properly, however - it ends up causing a folder named "" to show up) we've noticed that if we set a very minimal config for the mailbox in the main config (that wouldn't cause the mailbox to be autocreated), that this also initializes the folder name allowing for subsequent auto and subscribe directives to be processed for it: namespace inbox { inbox = yes mailbox "Spam" { auto = no } } is there some userdb response that will simply initialize the folder (without doing any name remapping) in the same way that the above config lines do? we have tried a few things based off Hajo's first line, but nothing we guess at seems to do the trick. ie: "namespace/inbox/mailbox"="Spam" "namespace/inbox/mailbox=Spam"=“Spam" > > ------------------------------ > > Message: 2 > Date: Tue, 9 Feb 2016 23:33:53 +0100 > From: Hajo Locke <Hajo.Locke(a)gmx.de> > To: dovecot(a)dovecot.org > Subject: Re: Per-user special folder? > Message-ID: <56BA6951.8010000(a)gmx.de> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Hello, > > Am 09.02.2016 um 22:28 schrieb Richard Platel: >> Hi >> >> It's possible to mark some folders as special use for IMAP in the config like: >> >> namespace inbox { >> mailbox Spam { >> special_use = \Junk >> } >> } >> >> >> Our webmail allows users to use an arbitrary folder for Spam, and we have this settings and we'd like to return it in from our UserDB (which is a custom dict proxy). >> >> For testing were able to set a namespace parameter like "separator" by returning: >> "namespace/inbox/separator" : "=", >> >> from UserDB, but can't figure out a way to set mailbox settings, >> >> "namespace/inbox/mailbox Spam/special_use" : "\Junk", for example doesn't work. >> >> Is there a way to return this setting from a UserDB query? >> > we use this a lot with userdb to allow individual folders marked as special. > your userbd-query should return something like this: > > namespace/inbox/mailbox=Junk namespace/inbox/mailbox/Junk/name=Spam > namespace/inbox/mailbox/Junk/auto=subscribe > namespace/inbox/mailbox/Junk/special_use=\Junk > Spam is visible name in this case. > > Hajo

2 2

doveadm backup to local drive
by Terry Barnum 17 Feb '16

17 Feb '16

I'm trying to get doveadm to backup all users to a local drive without any luck. $ sudo doveadm backup -A /Volumes/mail_bak/mailstore_backup/ Error: User listing returned failure doveadm: Error: Failed to iterate through some users The doveadm-backup man page has the instruction to make sure the iterate query matches the database layout but I'm not sure what that means. If the user_query in dovecot-sql.conf.ext looks like this, what should the iterate_query look like? user_query = \ SELECT '/opt/local/virtual/%d/%n/mail' as home, \ 'maildir:/opt/local/virtual/%d/%n/mail' as mail, 501 as uid, \ 501 as gid, concat("*:storage=", quota) AS quota \ FROM mailbox WHERE username = "%u" AND active = "1" # Query to get a list of all usernames. iterate_query = SELECT username AS user FROM users Thanks, -Terry Terry Barnum digital OutPost Carlsbad, CA http://www.dop.com 800/464-6434

1 1

Dovecot IMAP permissions issue (see original)
by Steve Cole 17 Feb '16

17 Feb '16

/ >/What purpose does vpopmail serve that dovecot alone does not? Isn't it > just an ancient leftover from historic qmail times? qmail and vpopmail are still quite prominent on the Internet. I see no reason to change my setup at the moment. Possibly I could re-architect to read user info directly from mysql but that would not help with the fact that dovecot then likely read or write as the wrong userid on the system (since mailboxes are virtual). Have recreated the same issue (sans mysql) on another vpopmail system. Regardless, it is a bug. From my process list: 25813 vpopmail 20 0 26468 4984 4016 R 0.7 0.0 0:00.02 imap 26730 vpopmail 20 0 28332 5940 4212 S 0.7 0.0 0:00.06 imap For certain, imap being ANY other user than root means that the /var/run/dovecot/imap-* sockets would be unwritable.

1 0

How to understand NFS lookup (requests) spike?
by Alessio Cecchi 17 Feb '16

17 Feb '16

Hi, I'm are running a classic Dovecot setup: About ten thousand connected users mailbox in Maildir format shared via NFS (NetApp) Director for POP/IMAP Delivery via Dovecot LDA All works fine but sometimes I see a spike on the load of POP/IMAP servers and high disk usage (close to 100%) on NFS NetApp. When this happens on NFS stats (of POP/IMAP) I can see an high volume of "lookup, remove, rename" requests. Example (avg is during normal load, max is request number during the spike): Lookup avg 100 max 700 Remove avg 50 max 300 Rename avg 50 max 300 Getattr avg 200 max 250 Total NFS avg 600 max 1800 I think that some users are doing some kinds of "intensive" operations on their mailbox but what and who? I am currently using "iotop" to monitor the activity of individual users but I can't figure out who is causing the high number of I/O requests. Have you any suggestions? Thanks -- Alessio Cecchi Postmaster @ http://www.qboxmail.it https://www.linkedin.com/in/alessice

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