- dovecot - dovecot.org

RFC 5465 (NOTIFY) violation: missing HIGHESTMODSEQ in initial STATUS responses
by Guilhem Moulin 08 Sep '15

08 Sep '15

Quoting RFC 5465 (NOTIFY): “If the NOTIFY command enables MessageNew, MessageExpunge, AnnotationChange, or FlagChange notifications for a mailbox other than the currently selected mailbox, and the client has specified the STATUS indicator parameter, then the server MUST send a STATUS response for that mailbox before NOTIFY's tagged OK. […] If either AnnotationChange or FlagChange are included and the server also supports the CONDSTORE [RFC4551] and/or QRESYNC [RFC5162] extensions, the STATUS response MUST contain UIDVALIDITY and HIGHESTMODSEQ.” — https://tools.ietf.org/html/rfc5465#section-3.1 While unsolicited STATUS responses include HIGHESTMODSEQ indeed, the initial STATUS responses (caused by the presence of the STATUS indicator) do not: ~$ /usr/lib/dovecot/imap * PREAUTH [CAPABILITY IMAP4rev1 … CONDSTORE QRESYNC … NOTIFY SPECIAL-USE] Logged in as guilhem a ENABLE QRESYNC * ENABLED QRESYNC a OK Enabled (0.000 secs). b NOTIFY SET STATUS (SUBSCRIBED (MessageNew MessageExpunge FlagChange)) * STATUS INBOX (MESSAGES 9069 UIDNEXT 109398 UIDVALIDITY 1312585007 UNSEEN 0) […] b OK NOTIFY completed (0.008 secs). [time passes… a new message is delivered to INBOX] * STATUS INBOX (MESSAGES 9070 UIDNEXT 109399 UNSEEN 1 HIGHESTMODSEQ 22216) This defeats the purpose of the STATUS indicator for disconnected clients since they have to issue separate STATUS commands (or a LIST command if LIST-{EXTENDED,STATUS} have been advertized) to find out which mailboxes have got a new HIGHESTMODSEQ. Cheers, -- Guilhem.

2 1

NOTIFY regression: 2.18 no longer notifies of events in INBOX
by Guilhem Moulin 08 Sep '15

08 Sep '15

Here is an example with APPEND $ /usr/lib/dovecot/imap S1: * PREAUTH [CAPABILITY IMAP4rev1 … MOVE NOTIFY SPECIAL-USE] Logged in as guilhem C1: a1 NOTIFY SET (INBOXES (MessageNew MessageExpunge FlagChange)) S1: a1 OK NOTIFY completed (0.000 secs) $ /usr/lib/dovecot/imap S2: * PREAUTH [CAPABILITY IMAP4rev1 … MOVE NOTIFY SPECIAL-USE] Logged in as guilhem C2: a2 APPEND INBOX {1+} C2: x S2: a2 OK [APPENDUID 1384472528 26085] Append completed (0.229 secs). With 2.13 from Debian Jessie, S1 sends a notification for the new message in INBOX, as expected: S1: * STATUS INBOX (MESSAGES 4333 UIDNEXT 26086 UNSEEN 1) However it doesn't with 2.18 from Debian Sid, as if ‘INBOX’ was excluded from the mailbox filter ‘INBOXES’. It does send a notification for ‘virtual/unseen’ instead (as expected), but nothing for ‘INBOX’. S1: * STATUS virtual/unseen (MESSAGES 3 UIDNEXT 15186 UNSEEN 3) This is INBOX-specific because APPENDING the message to another mailbox triggers the notification on both 2.13 and 2.18 as expected: S1: * STATUS test (MESSAGES 2 UIDNEXT 3 UNSEEN 2) S1: * STATUS virtual/unseen (MESSAGES 2 UIDNEXT 15195 UNSEEN 2) I attach the ‘dovecot -n’ output for both 2.13 and 2.18. -- Guilhem.

2 1

"NOTIFY SET (mailboxes INBOX (...))" crashes the IMAP client
by Guilhem Moulin 07 Sep '15

07 Sep '15

Hi list, The NOTIFY extension (RFC 5465) works fine for mailboxes in the "virtual/" namespace, but it crashes the IMAP client when used with a mailbox in the empty "" namespace: ~$ /usr/lib/dovecot/imap * PREAUTH [CAPABILITY IMAP4rev1 … NOTIFY SPECIAL-USE] Logged in as guilhem a NAMESPACE * NAMESPACE (("" "/")("virtual/" "/")) NIL NIL a OK Namespace completed. b NOTIFY SET (mailboxes virtual/all (MessageNew MessageExpunge)) b OK NOTIFY completed (0.001 secs). c NOTIFY SET (mailboxes INBOX (MessageNew MessageExpunge)) imap(guilhem): Panic: file mail-namespace.c: line 679 (mail_namespace_find): assertion failed: (ns != NULL) imap(guilhem): Error: Raw backtrace: … Aborted The "subtree" mailbox filter has the same problem, but the non-parameterized ones ("inboxes", "personal" and "subscribed") work fine. You'll find the output of ‘dovecot -n’ enclosed. Cheers, -- Guilhem.

2 3

question on autch cache parameters
by matthias lay 07 Sep '15

07 Sep '15

Hi list, I have a question on auth caching in 2.2.18. I am using acl_groups for a master user, appended in a static userdb file # snip ############################### master@uma:{SHA}XXXX=::::::userdb_acl_groups=umareadmaster allow_nets=127.0.0.1 # snap ############################### and use this group in a global ACL file. I discovered this only works on first NOT-cached login environment in imap-postlogin script on first login: AUTH_TOKEN=e96b5a32ceb2cafc4460c210ad2e92e3d7ab388c MASTER_USER=master@uma SPUSER=private/pdf LOCAL_IP=127.0.0.1 USER=pdf AUTH_USER=master@uma PWD=/var/run/dovecot USERDB_KEYS=ACL_GROUPS HOME SPUSER MASTER_USER AUTH_TOKEN AUTH_USER SHLVL=1 HOME=/var/data/vmail/private/pdf ACL_GROUPS=umareadmaster IP=127.0.0.1 _=/usr/bin/env on the second cached login it looks like this AUTH_TOKEN=12703b11932f233520f6d4b33559c33aeb1cfc7f MASTER_USER=master@uma SPUSER=private/pdf LOCAL_IP=127.0.0.1 USER=pdf AUTH_USER=master@uma PWD=/var/run/dovecot USERDB_KEYS=HOME SPUSER MASTER_USER AUTH_TOKEN AUTH_USER SHLVL=1 HOME=/var/data/vmail/private/pdf IP=127.0.0.1 _=/usr/bin/env so the ACL_GROUPS is gone. is this intended to be like that. so groups not included in cache and I have to find another approach? anybody else encountered similar problems with some auth Variables and caching? Greetz Matze

4 6

doveadm quota recalc problem for domain
by Samuel 06 Sep '15

06 Sep '15

Hello, I've set up user quota and domain quota for dict SQL and all seems OK. New mail for user increase the user quota and the domain quota. Deleting email count down user quota and domain quota. But in case of SQL failure, I'm trying to rebuild the user quota and domain quota with doveadm quota recalc. The problem is that the command : 'doveadm quota recalc -u foo@bar' sets the domain quota only with user foo@bar even when I try a domain quota recalc : doveadm quota recalc -A or doveadm quota recalc -u *@bar (only one user is taken in account for the domain quota and not all the user). The domain SQL database is broken with value of only one user for the whole domain quota. So how to achieve rebuild domain quota correctly with doveadm ? Thanks a lot. Samuel. Debian Jessie Dovecot : 2.2.13 custom grsec kernel :Linux postfix 3.14.50-grsec-1 ########################## dovecot -n : # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.14.50-grsec-1 x86_64 Debian 8.1 nfs4 auth_mechanisms = plain login auth_verbose = yes dict { quota = mysql:/etc/dovecot/dovecot-dict-sql-user.conf quota_domain = mysql:/etc/dovecot/dovecot-dict-sql-domain.conf } lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes login_trusted_networks = XXXXXX/24 mail_location = maildir:/maildir/%d/%n/Maildir mail_plugins = " quota" 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 { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { quota = dict:user::proxy::quota quota2 = dict:domain:%d:proxy::quota_domain quota_grace = 10M quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Mailbox is full quota_status_success = DUNNO quota_warning = storage=100%% quota-warning 100 %u quota_warning2 = storage=95%% quota-warning 95 %u quota_warning3 = storage=80%% quota-warning 80 %u quota_warning4 = -storage=100%% quota-warning below %u sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = imap pop3 sieve lmtp service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service dict { unix_listener dict { mode = 0666 user = dovecot } } service quota-status { executable = quota-status -p postfix inet_listener { port = 12340 } } service quota-warning { client_limit = 1 executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { mode = 0666 user = vmail } user = vmail } ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lda { mail_plugins = " quota sieve" } protocol imap { mail_plugins = " quota imap_quota" } ################ root@postfix:/etc/dovecot# cat dovecot-dict-sql-domain.conf |grep -v "#" connect = host=XXXXX dbname=mail user=test password=test map { pattern = priv/quota/storage table = domains username_field = domain value_field = quota } map { pattern = priv/quota/messages table = domains username_field = domain value_field = quota_messages } map { pattern = shared/expire/$user/$mailbox table = expires value_field = expire_stamp fields { username = $user mailbox = $mailbox } } ################### root@postfix:/etc/dovecot# cat dovecot-dict-sql-user.conf |grep -v "#" connect = host=XXXXXXXX dbname=mail user=test password=test map { pattern = priv/quota/storage table = quota username_field = email value_field = bytes } map { pattern = priv/quota/messages table = quota username_field = email value_field = messages } map { pattern = shared/expire/$user/$mailbox table = expires value_field = expire_stamp fields { username = $user mailbox = $mailbox } } ############################

1 0

Mailbox can't be created
by Paulo Matos 06 Sep '15

06 Sep '15

Hi, I have setup postfix master.cf to use dovecot-lda to deliver (using -m) all messages to PreInbox: dovecot unix - n n - - pipe flags=DRhu user=vmail:vmail argv=/usr/libexec/dovecot/deliver -f ${sender} -a ${recipient} -d ${user}@${nexthop} -m PreINBOX And enabled lda_mailbox_autocreate. The message I have now it: Aug 27 10:02:29 lda(): Info: msgid=<dae42d0cf57bf4496a3dd53e162f8281(a)localhost.localdomain>: save failed to open mailbox PreINBOX: Mailbox can't be created Aug 27 10:02:29 lda(): Info: msgid=<dae42d0cf57bf4496a3dd53e162f8281(a)localhost.localdomain>: saved mail to INBOX Why wouldn't dovecot itself be able to create mailboxes? I am using virtual domains and users on a mysql database through postfix and mailboxes saved in MailDir format. Configuration of dovecot is: # 2.2.18: /etc/dovecot/dovecot.conf # OS: Linux 4.1.5-x86_64-linode61 x86_64 Fedora release 22 (Twenty Two) ext4 auth_debug = yes auth_mechanisms = plain login digest-md5 cram-md5 auth_verbose = yes auth_verbose_passwords = yes default_internal_user = root imap_client_workarounds = delay-newmail tb-extra-mailbox-sep lda_mailbox_autocreate = yes mail_debug = yes mail_location = maildir:/home/vmail/%d/%n/Maildir maildir_very_dirty_syncs = yes 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 = INBOX. separator = . type = private } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } postmaster_address = pmatos protocols = imap quota_full_tempfail = yes service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { mode = 0600 user = vmail } user = $default_internal_user } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { args = uid=5000 gid=5000 home=/home/vmail/%d/%n allow_all_users=yes driver = static } protocol lda { auth_socket_path = /var/run/dovecot/auth-master deliver_log_format = msgid=%m: %$ log_path = /home/vmail/dovecot-deliver.log } protocol imap { mail_max_userip_connections = 100 } Regards, -- Paulo Matos

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Considerations for a not so simple set-up ...
by Lars Hanke 05 Sep '15

05 Sep '15

I want to set up a new IMAP server with Dovecot, so far I've been running Cyrus. I'm running dovecot on Debian Jessie. The general idea of the system would be: 1) Virtual users, i.e. login users are disjoint from any mail accounts. 2) Real-Users authenticate using their kerberos tickets. 3) There is a n-to-n mapping of real to virtual users. 4) Maildirs shall be stored on glusterfs. 5) Fallback passwords for cloud access Concerning 1) and 2) I keep reading that this is possible, but I could not find any concise and current description. I'd welcome pointers to howtos. Concerning 3) this should be a matter of ACL, e.g. a single real user (kerberos pricipal) may have several mail-boxes (virtual users), and groups of real users may share the same mail-box. I have a faint idea, how this could be done in Cyrus (but never did that), but I read that these features should exist in Dovecot as well. But I'm completely lost to even figure out a starting point. I appreciate any keywords for further reading. Concerning 4) I read that there are some issues using NFS. Are there any caveats when using gluster? Concerning 5) Users logging in from outside may not have TGT on their notebooks, which by design should run as stand-alone. They should nevertheless be able to access their mail. I currently think of another set of real users, but anything less messy is welcome. Did someone try something similar, already? Thanks for your help, - lars.

1 0

'doveadm expunge' with -A and userdb { driver = passwd }
by Grant 05 Sep '15

05 Sep '15

I'm expunging mail in my crontab like this: doveadm search -u user1 mailbox INBOX.Trash savedbefore 30d doveadm search -u user2 mailbox INBOX.Trash savedbefore 30d doveadm search -u user3 mailbox INBOX.Trash savedbefore 30d ... I'd rather do this: doveadm search -A mailbox INBOX.Trash savedbefore 30d but I'm told not to: "If the -A option is present, the command will be performed for all users. Using this option in combination with system users from userdb { driver = passwd } is not recommended, because it contains also users with a lower UID than the one configured with the first_valid_uid setting." I'm using userdb { driver = passwd-file } but I'm guessing that's the same thing. Am I understanding this correctly? - Grant

3 7

apple mail fails to connect intermittently
by Eric Smith 04 Sep '15

04 Sep '15

Hi (New to dovecot) I am experiencing intermittent connection failures with both apple mail and ios mail. No specific errors and I cannot find relevant information on the mac logs or on my server. It spontaneously corrects. restarting dovecot - no dice It just happened now (again), this time there might have been a reason, I just dovecot-lda'd some large mailboxes from mbox to Maildir. But as I said, it spontaneously corrects, so is downloading now. While this connection error is occurring, then I can connect to dovecot via a remote mutt session, via web imap client and via outlook. Is this a known issue? FWIW: % doveconf -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.19.0-26-generic i686 Ubuntu 15.04 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = 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 } mailbox virtual/All { special_use = \All } prefix = } passdb { driver = pam } postmaster_address = postmaster(a)biovolt.nl protocols = " imap lmtp" ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { driver = passwd } protocol lda { info_log_path = /tmp/dovecot-deliver.log log_path = /tmp/dovecot-deliver-errors.log } Thanks Eric

1 0

Reviving an old thread: "requiring client certificates for external connections"
by Robert Giles 03 Sep '15

03 Sep '15

Hi folks - reviving an old thread from 2010: http://www.dovecot.org/list/dovecot/2010-December/055837.html We're basically looking to do the same thing: require client certificates for external connections, while preserving certificate-less username/password authentication for internal connections. Any tips on the best way to accomplish this? 'ssl_verify_client_cert = yes' can go within a local {} block, but it doesn't seem to force the client to submit a certificate. Thanks in advance - Robert Giles

1 0

disable quota for all users
by Support Antenna 03 Sep '15

03 Sep '15

Dear all, On a new server (postfix dovecot postfixadmin Centos) I did define quota=0 in postfixadmin However suddenly a user with more than 9Gb of mail got his mailbox new/cur empty and maillog shows: Sep 3 15:43:56 mail16 dovecot: lda(brouwerb(a)scholarium.nl): Error: sieve: msgid=<alpine.LRH.2.20.1509031543050.16381(a)streaming2.antenna.nl>: failed to store into mailbox 'INBOX': Quota exceeded (mailbox for user is full) Sep 3 15:43:56 mail16 dovecot: lda(brouwerb(a)scholarium.nl): Error: sieve: script /home/sieve/globalfilter.sieve failed with unsuccessful implicit keep Sep 3 15:43:56 mail16 dovecot: lda(brouwerb(a)scholarium.nl): msgid=<alpine.LRH.2.20.1509031543050.16381(a)streaming2.antenna.nl>: rejected: Quota exceeded (mailbox for user is full) Apparently somewhere a quota is defined, probably in dovecot cd /etc/dovecot grep -R quota * |grep -v "#" conf.d/auth-vpopmail.conf.ext: args = quota_template=quota_rule=*:backend=%q dovecot.conf: mail_plugins = quota sieve dovecot.conf: mail_plugins = quota imap_quota trash dovecot.conf: mail_plugins = quota dovecot.conf: quotadict = mysql:/etc/dovecot/dovecot-dict-quota.conf dovecot.conf: quota = dict:user::proxy::quotadict dovecot-dict-quota.conf: pattern = priv/quota/storage dovecot-dict-quota.conf: table = quota2 dovecot-dict-quota.conf: pattern = priv/quota/messages dovecot-dict-quota.conf: table = quota2 dovecot-mysql.conf:user_query = SELECT concat('/home/vmail/', maildir) as home, concat('maildir:/home/vmail/', maildir) as mail, 101 AS uid, 12 AS gid, CONCAT('*:messages=10000:bytes=', quota) as quota_rule FROM mailbox WHERE username = '%u' AND active = '1' Output of dovecot -n : # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-573.3.1.el6.x86_64 x86_64 CentOS release 6.7 (Final) ext4 auth_mechanisms = plain login dict { quotadict = mysql:/etc/dovecot/dovecot-dict-quota.conf } first_valid_gid = 12 first_valid_uid = 101 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lmtp_save_to_detail_mailbox = yes mail_location = maildir:/home/vmail/%d/%n 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 passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } plugin { acl = vfile:/etc/dovecot/acls quota = dict:user::proxy::quotadict sieve = ~/dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /home/sieve/ sieve_global_path = /home/sieve/globalfilter.sieve sieve_max_script_size = 1M trash = /etc/dovecot/trash.conf } protocols = imap pop3 lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { group = mail mode = 0666 user = vmail } } service dict { unix_listener dict { group = mail mode = 0666 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service imap { vsz_limit = 256 M } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } ssl_ca = </etc/pki/tls/certs/PositiveSSL_Bundle.crt ssl_cert = </etc/pki/tls/certs/webmail2.antenna.nl.crt ssl_key = </etc/pki/tls/certs/webmail2.antenna.nl.key ssl_verify_client_cert = yes userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { mail_plugins = quota sieve postmaster_address = postmaster(a)antenna.nl } protocol imap { imap_client_workarounds = delay-newmail mail_plugins = quota imap_quota trash } protocol lmtp { mail_plugins = sieve } protocol pop3 { mail_plugins = quota pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } protocol sieve { managesieve_implementation_string = Dovecot Pigeonhole managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 } What should be changed where to disable quota (as to messages and space)? Thanks a lot, warm regards, Tsjêbbe

2 5

new server
by Franc 03 Sep '15

03 Sep '15

I am going to build a new box (2-3.000 users, 4-500 domains name (50-100 real, remaining used as redirect on the main (.it,.eu,.com,...)) . Is there any how-to or similar to follow for build an updated system? (My current boxes are based on CentoOS 6.x using included Dovecot + PostFix .rpms) I am thinking to CentOS 7.x + Dovecot + PostFix + RoundCube + Squirrel + procmail with unix users and virtual users. But I admit that systemd isn't still my best friend ... :-) In CentOS 7.x there is a default dovecot-2.2.10. Is it enough Ok or better use different rpms source? Any hints is welcomed :-) Thanks, F.

1 0

internal server error
by Sergey Schwartz 03 Sep '15

03 Sep '15

Hi! Today I've got a client unable to open a mailbox with Thunderbird - constantly drops connection. On the server side I can see an error message in the log Jul 22 11:07:29 mx10 dovecot: imap(oleg.vasilyev(a)bgoperator.com): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x7c96f) [0x7fd52575b96f] -> /usr/lib/dovecot/libdovecot.so.0(+0x7c9ce) [0x7fd52575b9ce] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fd525709875] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_uint32_to_offset+0x74) [0x7fd525aa72d4] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_cache_add+0x561) [0x7fd525a91cf1] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_parse_header+0x2b1) [0x7fd525a79241] -> /usr/lib/dovecot/libdovecot.so.0(+0x66e47) [0x7fd525745e47] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x68) [0x7fd5257657a8] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d) [0x7fd52576614d] -> /usr/lib/dovecot/libdovecot.so.0(message_parse_header_next+0x62) [0x7fd52574af02] -> /usr/lib/dovecot/libdovecot.so.0(+0x667ff) [0x7fd5257457ff] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x68) [0x7fd5257657a8] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d) [0x7fd52576614d] -> /usr/lib/dovecot/libdovecot.so.0(message_get_header_size+0x53) [0x7fd52574e4b3] -> /usr/lib/dovecot/libdovecot-storage.so.0(imap_msgpart_open+0x257) [0x7fd525ab4527] -> dovecot/imap(+0x1da42) [0x7fd525f3ca42] -> dovecot/imap(+0x1be3f) [0x7fd525f3ae3f] -> dovecot/imap(imap_fetch_more+0x37) [0x7fd525f3be97] -> dovecot/imap(cmd_fetch+0x316) [0x7fd525f2f946] -> dovecot/imap(command_exec+0x4c) [0x7fd525f398cc] -> dovecot/imap(+0x19830) [0x7fd525f38830] -> dovecot/imap(+0x198c4) [0x7fd525f388c4] -> dovecot/imap(client_handle_input+0x115) [0x7fd525f38bc5] -> dovecot/imap(client_input+0x75) [0x7fd525f38fa5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x5b) [0x7fd52576e54b] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xbb) [0x7fd52576f5cb] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9) [0x7fd52576e5d9] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7fd52576e658] Jul 22 11:07:29 mx10 dovecot: imap(oleg.vasilyev(a)bgoperator.com): Fatal: master: service(imap): child 17109 killed with signal 6 (core dumped) Should I report a bug or there is a workaround for this issue? -- Best regards, Sergey Schwartz Senior System Administrator Biblio Globus Tour Operator www.bgoperator.ru T: +7 495 5042500 ext 1532 E: sergey.schwartz(a)bgoperator.com

4 6

sieve filtering utf 8 strings
by Sergey Schwartz 03 Sep '15

03 Sep '15

Guys, I'm completely stuck, so asking for advice. My user has a sieve script which checks message header if it contains words in russian like 'Лист бронирования отправлен'. Pritty simple script # rule:[Отправлено] if allof (header :contains "subject" "LDS (robot): Лист бронирования отправлен", header :contains "from" "noreply(a)bgoperator.com") { fileinto "Отправлено"; } I don't have errors compiling the script or executing it via LMTP, but it doesn't work. Normally user receives messages from robot with subject encoded as quoted-printable Subject: =?UTF-8?Q?LDS_(robot):_=D0=9B=D0=B8=D1=81=D1=82?= =?UTF-8?Q?_=D0=B1=D1=80=D0=BE=D0=BD=D0=B8=D1=80=D0=BE=D0=B2=D0=B0=D0=BD?= =?UTF-8?Q?=D0=B8=D1=8F__=D0=BE=D1=82=D0=BF=D1=80=D0=B0=D0=B2=D0=BB=D0=B5?= When I send a test message via Thunderbird with required words - sieve works fine and subject is encoded in base64 Subject: =?UTF-8?B?0JvQuNGB0YIg0LHRgNC+0L3QuNGA0L7QstCw0L3QuNGPINC+0YLQv9GA?= =?UTF-8?B?0LDQstC70LXQvQ==?= It is the same text, but encodind is different - base 64 works fine and quoted-printable does not. Is it possible to have both supported for sieve ? -- Best regards, Sergey Schwartz Senior System Administrator Biblio Globus Tour Operator www.bgoperator.ru T: +7 495 5042500 ext 1532 E: sergey.schwartz(a)bgoperator.com

3 3

Unsubscribe from shared mailbox
by Miloslav Hůla 03 Sep '15

03 Sep '15

Hi, I'm using Dovecot 2.2.13-11 (Debian Jessie) and shared namespace (to be old Cyrus compatible setting): namespace { list = children location = maildir:/vmail/user/%%n/Maildir:INDEXPVT=/vmail/user/%n/Maildir/Shared/%%n prefix = user.%%n. separator = . subscriptions = yes type = shared } My account: milo Other account: peter After subscription, I have: /vmail/user/milo/Maildir/Shared/peter/.INBOX/dovecot.index.pvt.log After unsubscribe, file and folder still exists. Where Dovecot stores the information, that I had unsubscribed from this folder? I need this to analyze subscriptions over all mail acounts. Thank you, Miloslav

1 0

Error: Raw backtrace: and Transaction log changed unexpectedly, can't get modseq
by Andreas Fineske 03 Sep '15

03 Sep '15

Hi there, i've got some errors in my log files # dovecot --version 2.2.9 Here the Log's: Aug 26 12:05:39 s-imap4 dovecot: dsync-server(ralph.carstens.iea-dpc.de): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x5e271) [0x7f61d943c271] -> /usr/lib/dovecot/libdovecot.so.0(+0x5e34e) [0x7f61d943c34e] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f61d93f7a9e] -> /usr/lib/dovecot/modules/lib01_acl_plugin.so(+0x53e2) [0x7f61d8c083e2] -> /usr/lib/dovecot/modules/lib01_acl_plugin.so(+0x72d9) [0x7f61d8c0a2d9] -> /usr/lib/dovecot/modules/lib01_acl_plugin.so(acl_attribute_iter_next+0x5d) [0x7f61d8c0953d] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x99e73) [0x7f61d973fe73] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_mailbox_delete+0xf8) [0x7f61d9741338] -> /usr/lib/dovecot/modules/lib15_notify_plugin.so(+0x1d10) [0x7f61d87efd10] -> /usr/lib/dovecot/modules/lib01_acl_plugin.so(+0xbe16) [0x7f61d8c0ee16] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_delete+0x27) [0x7f61d9717f77] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](dsync_brain_mailbox_tree_sync_change+0x281) [0x7f61d9bf4e21] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](dsync_brain_recv_mailbox_tree_deletes+0x11b) [0x7f61d9bf4aeb] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](dsync_brain_run+0x4e3) [0x7f61d9bf1f53] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](+0x1c270) [0x7f61d9bf2270] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](+0x2de60) [0x7f61d9c03e60] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x27) [0x7f61d944c247] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xd7) [0x7f61d944cfd7] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f61d944bde8] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](+0x1a189) [0x7f61d9bf0189] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](+0xebeb) [0x7f61d9be4beb] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](+0x184d3) [0x7f61d9bee4d3] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x27) [0x7f61d944c247] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xd7) [0x7f61d944cfd7] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f61d944bde8] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f61d93fcc93] -> dovecot/doveadm-server [ralph.carstens.iea-dpc.de recv_mailbox_tree_deletes](main+0x11b) [0x7f61d9be494b] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f61d903aec5] and Aug 26 09:33:03 s-imap3 dovecot: dsync-local(dv.iea-dpc.de): Error: /vmail/iea-dpc.de/dv/Maildir/.Projekte.BiSpra.erledigt/dovecot.index.log: Transaction log changed unexpectedly, can't get modseq Aug 26 09:33:03 s-imap3 dovecot: dsync-local(dv.iea-dpc.de): Error: /vmail/iea-dpc.de/dv/Maildir/.Projekte.BiSpra.erledigt/dovecot.index.log: Transaction log changed unexpectedly, can't get modseq Can you help me? Gruß Andreas -- IEA Data Processing and Research Center Andreas Fineske ICT Services Mexikoring 37 22297 Hamburg Germany tel: +49 40 48 500-550 fax: +49 40 48 500-501 email:andreas.fineske@iea-dpc.de web: www.iea-dpc.de -- -- IEA Data Processing and Research Center Andreas Fineske Information and Communication Technology Services Mexikoring 37 22297 Hamburg Tel.: 040/48 500 550 Fax: 040/48 500 501 E-Mail: andreas.fineske(a)iea-dpc.de Web: www.iea-dpc.de --

1 0

more than two way replication
by djk 02 Sep '15

02 Sep '15

Is there anyway of replicating between more than one other instance of Dovecot. I have bidirectional replication working successfully and it seems to be reliable. I would like to replicate from one or more of these instances to one other. Is this possible? Dirk

2 1

imap segfaults when using antispam plugin, and moving mail to an 'unsure' folder.
by Andrew McN 02 Sep '15

02 Sep '15

I put up a question on serverfault first, which has the details, including a stack trace: http://serverfault.com/questions/713687/dovecot-antispam-error-storing-mail . Details also copied below. Is this a known bug? If I built dovecot from source rather than using the Ubuntu 14.04 packages, would I expect that to help? Are there any configuration details that might be relevant? (dovecot -n output shown Any help much appreciated. Andrew McNaughton Details on the serverfault page repeated below, plus a little more. ----------------------------------------------------- Ubuntu 14.04.3 x86_64 Running inside lxc-docker 1.7.0 dovecot-imapd 1:2.2.9-1ubuntu2 dovecot-antispam 2.0+20130822-2build1 Filesystem is via docker, so aufs is involved, and under that on the host systems is ext4 ----------------------------------------------------- I know mail is not supposed to be moved into a mailbox of type 'unsure'. The server should refuse this action. What actually happens though is that the imap process throws an error and dies: Aug 12 17:53:07 255c7fc2d2f0 imap: antispam: mailbox_is_unsure(Review-Classification): 1 Aug 12 17:53:07 255c7fc2d2f0 dovecot: imap(user(a)example.com): Panic: file mail-storage.c: line 2141 (mailbox_copy): assertion failed: (!ctx->unfinished) Aug 12 17:53:07 255c7fc2d2f0 dovecot: imap(user(a)example.com): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x5e271) [0x7f718e7dd271] -> /usr/lib/dovecot/libdovecot.so.0(+0x5e34e) [0x7f718e7dd34e] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f718e798a9e] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x7196f) [0x7f718eab896f] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_move+0x15) [0x7f718eab8985] -> dovecot/imap(+0xded5) [0x7f718ef84ed5] -> dovecot/imap(command_exec+0x3c) [0x7f718ef8f6dc] -> dovecot/imap(+0x176cf) [0x7f718ef8e6cf] -> dovecot/imap(+0x17785) [0x7f718ef8e785] -> dovecot/imap(client_handle_input+0x125) [0x7f718ef8eaa5] -> dovecot/imap(client_input+0x75) [0x7f718ef8ee35] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x27) [0x7f718e7ed247] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xd7) [0x7f718e7edfd7] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f718e7ecde8] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f718e79dc93] -> dovecot/imap(main+0x2c4) [0x7f718ef832f4] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f718e3dbec5] -> dovecot/imap(+0xc460) [0x7f718ef83460] Aug 12 17:53:07 255c7fc2d2f0 dovecot: imap(user(a)example.com): Fatal: master: service(imap): child 58 killed with signal 6 (core dumped) ----------------------------------------------------------------------- root@8ec9579667fc:/# gdb /usr/lib/dovecot/imap /tmp/61 GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/lib/dovecot/imap...Reading symbols from /usr/lib/debug//usr/lib/dovecot/imap...done. done. [New LWP 61] Core was generated by `dovecot/imap'. Program terminated with signal SIGABRT, Aborted. #0 0x00007f5dd5394cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 56 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory. (gdb) bt full #0 0x00007f5dd5394cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 resultvar = 0 pid = 61 selftid = 61 #1 0x00007f5dd53980d8 in __GI_abort () at abort.c:89 save_stage = 2 act = {__sigaction_handler = {sa_handler = 0x800, sa_sigaction = 0x800}, sa_mask = {__val = {140041026109520, 178, 140041026077952, 512, 140040990095251, 140041026077952, 140041026077952, 512, 140040990087565, 140734823456136, 140040990231826, 140041026077952, 140734823456040, 0, 140040990231929, 140041026077952}}, sa_flags = -713567062, sa_restorer = 0x7fff6128dd01} sigs = {__val = {32, 0 <repeats 15 times>}} #2 0x00007f5dd5781298 in default_fatal_finish (type=<optimized out>, status=status@entry=0) at failures.c:192 backtrace = 0x7f5dd79d0538 "/usr/lib/dovecot/libdovecot.so.0(+0x5e271) [0x7f5dd5781271] -> /usr/lib/dovecot/libdovecot.so.0(+0x5e34e) [0x7f5dd578134e] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f5dd573ca9e] -> /usr/lib/d"... #3 0x00007f5dd578134e in i_internal_fatal_handler (ctx=0x7fff6128dd70, format=<optimized out>, args=<optimized out>) at failures.c:653 status = 0 #4 0x00007f5dd573ca9e in i_panic (format=format@entry=0x7f5dd5ab1e68 "file %s: line %d (%s): assertion failed: (%s)") at failures.c:264 ctx = {type = LOG_TYPE_PANIC, exit_status = 0, timestamp = 0x0} args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7fff6128de60, reg_save_area = 0x7fff6128dda0}} #5 0x00007f5dd5a5c96f in mailbox_copy (_ctx=<optimized out>, mail=mail@entry=0x7f5dd79ffbc0) at mail-storage.c:2141 ctx = 0x7f5dd7a043e0 t = 0x7f5dd79fdf00 keywords = 0x0 pvt_flags = 0 real_mail = <optimized out> ret = -1 __FUNCTION__ = "mailbox_copy" #6 0x00007f5dd5a5c985 in mailbox_move (_ctx=<optimized out>, mail=0x7f5dd79ffbc0) at mail-storage.c:2153 ctx = 0x7f5dd7a043e0 #7 0x00007f5dd5f28ed5 in fetch_and_copy (copy_count_r=<synthetic pointer>, src_uidset_r=<synthetic pointer>, search_args=<optimized out>, src_trans_r=0x7fff6128df18, t=<optimized out>, move=true, client=0x7f5dd79ee440) at cmd-copy.c:67 search_ctx = 0x7f5dd79ff920 src_trans = 0x7f5dd79fec10 srcset_ctx = {str = 0x7f5dd79d0350, first_uid = 0, last_uid = 4294967295} ret = 1 save_ctx = 0x0 mail = 0x7f5dd79ffbc0 copy_count = 1 src_uidset = 0x7f5dd79d0350 #8 cmd_copy_full (cmd=0x7f5dd79eee70, move=<optimized out>) at cmd-copy.c:123 client = 0x7f5dd79ee440 dest_storage = <optimized out> destbox = 0x7f5dd79f8d10 t = 0x7f5dd79fdf00 src_trans = 0x7f5dd573d029 <t_pop_check+9> search_args = 0x7f5dd79f73a0 messageset = 0x7f5dd79dbc10 "76" mailbox = 0x7f5dd79dbc18 "Review-Classification" src_uidset = <optimized out> sync_flags = (unknown: 0) imap_flags = (unknown: 0) changes = {pool = 0x7f5dd79d0350, uid_validity = 0, saved_uids = {arr = {buffer = 0x1, element_size = 140040986301132}, v = 0x1, v_modifiable = 0x1}, ignored_modseq_changes = 3617438728, changed = 93, no_read_perm = 127} msg = <optimized out> ret = <optimized out> __FUNCTION__ = "cmd_copy_full" #9 0x00007f5dd5f336dc in command_exec (cmd=0x7f5dd79eee70) at imap-commands.c:158 hook = 0x7f5dd79d90d0 ret = <optimized out> #10 0x00007f5dd5f326cf in client_command_input (cmd=0x7f5dd79eee70) at imap-client.c:780 client = 0x7f5dd79ee440 command = <optimized out> __FUNCTION__ = "client_command_input" #11 0x00007f5dd5f32785 in client_command_input (cmd=0x7f5dd79eee70) at imap-client.c:841 client = 0x7f5dd79ee440 command = <optimized out> __FUNCTION__ = "client_command_input" #12 0x00007f5dd5f32aa5 in client_handle_next_command (remove_io_r=<synthetic pointer>, client=0x7f5dd79ee440) at imap-client.c:879 No locals. #13 client_handle_input (client=client@entry=0x7f5dd79ee440) at imap-client.c:891 _data_stack_cur_id = 3 remove_io = false handled_commands = false __FUNCTION__ = "client_handle_input" #14 0x00007f5dd5f32e35 in client_input (client=0x7f5dd79ee440) at imap-client.c:933 cmd = 0x7f5dd79e5ae0 output = 0x7f5dd79eeca0 bytes = 39 __FUNCTION__ = "client_input" #15 0x00007f5dd5791247 in io_loop_call_io (io=0x7f5dd79eed90) at ioloop.c:388 ioloop = 0x7f5dd79d8720 t_id = 2 #16 0x00007f5dd5791fd7 in io_loop_handler_run (ioloop=ioloop@entry=0x7f5dd79d8720) at ioloop-epoll.c:220 ctx = 0x7f5dd79d93b0 list = 0x7f5dd79dade0 io = <optimized out> tv = {tv_sec = 1799, tv_usec = 999178} events_count = <optimized out> msecs = <optimized out> ret = 1 i = 0 call = <optimized out> __FUNCTION__ = "io_loop_handler_run" #17 0x00007f5dd5790de8 in io_loop_run (ioloop=0x7f5dd79d8720) at ioloop.c:412 __FUNCTION__ = "io_loop_run" #18 0x00007f5dd5741c93 in master_service_run (service=0x7f5dd79d85b0, callback=<optimized out>) at master-service.c:566 No locals. #19 0x00007f5dd5f272f4 in main (argc=1, argv=0x7f5dd79d8390) at main.c:400 set_roots = {0x7f5dd614aa00 <imap_setting_parser_info>, 0x0} login_set = {auth_socket_path = 0x7f5dd79d0048 "\001", postlogin_socket_path = 0x0, postlogin_timeout_secs = 60, callback = 0x7f5dd5f3c0f0 <login_client_connected>, failure_callback = 0x7f5dd5f3be20 <login_client_failed>, request_auth_token = 1} service_flags = <optimized out> storage_service_flags = <optimized out> username = 0x0 c = <optimized out> ------------------------------------------------------------------------------- root@8ec9579667fc:/# dovecot -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-43-generic x86_64 Ubuntu 14.04.3 LTS ext4 auth_debug = yes auth_verbose = yes disable_plaintext_auth = no first_valid_gid = 150 first_valid_uid = 150 last_valid_gid = 150 last_valid_uid = 150 mail_debug = yes mail_gid = vmail mail_location = maildir:/var/vmail/%d/%n/Maildir:INDEX=/var/vmail/%d/%n/Maildir/indexes mail_uid = vmail namespace inbox { inbox = yes location = mailbox Attention-Not-Required { auto = subscribe special_use = \Junk } mailbox Attention { auto = subscribe } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Review-Classification { auto = subscribe } 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 { antispam_backend = dspam antispam_debug_target = syslog antispam_dspam_args = --deliver=;--user;%u; antispam_dspam_binary = /usr/bin/dspam antispam_signature = X-DSPAM-Signature antispam_signature_missing = error antispam_spam = Attention-Not-Required antispam_trash = Trash antispam_unsure = Review-Classification antispam_verbose_debug = 1 mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = postmaster(a)example.net protocols = " imap lmtp" service lmtp { inet_listener lmtp { address = 127.0.0.1 port = 24 } user = vmail } ssl_cert = </etc/dovecot/dovecot.crt ssl_key = </etc/dovecot/private/dovecot.key ssl_protocols = TLSv1.2 TLSv1.1 TLSv1 !SSLv3 !SSLv2 userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = " sieve" } protocol lda { mail_plugins = " sieve" } protocol imap { mail_plugins = " antispam" }

1 1

doveadm-server hangs with 100% cpu usage
by Dennis Kuhn 02 Sep '15

02 Sep '15

we have some replication issues. From time to time a doveadm-server process takes 100% cpu in the state recv_mailbox_tree_deletes on the replica. The process runs forever until it is manually killed. Strace on this process doesn't show anything. Sometimes we have several doveadm-server processes in this state, all for the same account, all with 100% CPU Load. The logfile on the master says: Error: Timeout during state=recv_mailbox_tree Error: dsync(dobby5.heinlein-support.de): I/O has stalled, no activity for 600 seconds My workaround is to delete the user directory on the replica so that the whole account is replicated again. This solves the problem for this specific account. The dovecot version is 2.2.15 on the master and 2.2.16 on the replica. Dennis Kuhn -- Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-57 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

3 4

Moving mails from shared folder to shared folder doesn't work
by Peer Heinlein 02 Sep '15

02 Sep '15

Hi, having the attached configuration with Dovecot 2.2.9, Dovecot's crashing when moving a mail from a shared folder into another shared folder. Moving that mail into a "real" folder of the user or moving that mail from a real folder into the shared folder is always working. But moving from a shared folder into a shared folder doesn't work. Sep 2 11:47:42 mail02 dovecot: imap(peer.heinlein(a)example.com): Panic: file mail-index.c: line 380 (mail_index_keywords_unref): assertion failed: (keywords->refcount > 0) Sep 2 11:47:42 mail02 dovecot: imap(peer.heinlein(a)example.com): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x62792) [0x7f87e455f792] -> /usr/lib/dovecot/libdovecot.so.0(+0x627f6) [0x7f87e455f7f6] -> /usr/lib/dovecot/libdovecot.so.0(+0x1c5ca) [0x7f87e45195ca] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xb032f) [0x7f87e487232f] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_copy+0x75) [0x7f87e4838315] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_move+0x1d) [0x7f87e48383dd] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](+0xec4a) [0x7f87e4cfbc4a] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](command_exec+0x3d) [0x7f87e4d06acd] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](+0x18b60) [0x7f87e4d05b60] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](+0x18c4d) [0x7f87e4d05c4d] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](client_handle_input+0x11d) [0x7f87e4d05edd] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](client_input+0x72) [0x7f87e4d06292] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f87e456f5f6] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xaf) [0x7f87e45706cf] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f87e456f568] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f87e451e0c3] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](main+0x303) [0x7f87e4d10043] -> /lib/libc.so.6(__libc_start_main+0xfd) [0x7f87e4192c8d] -> dovecot/imap [peer.heinlein(a)example.com 172.31.xxx.xxx UID move](+0xd0e9) [0x7f87e4cfa0e9] Sep 2 11:47:42 mail02 dovecot: imap(peer.heinlein(a)example.com): Fatal: master: service(imap): child 18707 killed with signal 6 (core dumps disabled) Peer -- Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-42 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

1 0

Single Instance Storage after the fact
by Joe Beaubien 02 Sep '15

02 Sep '15

Hi everyone, I tried to find info about this online, but I couldn't find anything talking specifically about what I am trying to accomplish. I am sending and receiving the same attachments pretty often and as a result my email accounts are growing much more rapidly than I would like. *My goal* is to set up a second instance of Dovecot with SIS enabled and transfer everything over to this new Dovecot setup. I was thinking of simply running a dsync backup from the old instance and then a dsync backup -R on the new instance with SIS. Would this effectively create a new set of mailboxes without attachments (and a new folder full of attachments)? If not, can someone point me to information on how to accomplish this? Best regards, Joe B.

1 0

Problem with the Path argument in pigeonhole 0.4.3 at ubuntu 14.04
by Jakob-Matthias Böttger 31 Aug '15

31 Aug '15

Hello list members I want dovecot managesieve to store its config unter ~/.dovecot.sieve additionally dovecot should read as sieve_after the file ~/.sieve It's working fine BUT dovecot managesieve is always symlinking the sieve file at activation to ~/.sieve and not to ~/.dovecot.sieve as i configured it. Any idears about this strange behaviour? dovecot is configured as follows # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-53-generic x86_64 Ubuntu 14.04.3 LTS auth_mechanisms = plain login dict { acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext expire = mysql:/etc/dovecot/dovecot-dict-expire.conf.ext } disable_plaintext_auth = no lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = *,[::] log_timestamp = "%Y-%m-%d %H:%M:%S " mail_plugins = " expire quota acl" mail_privileged_group = vmail maildir_very_dirty_syncs = yes 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 = yes location = prefix = separator = / type = private } namespace { list = children location = maildir:%%h/Maildir:INDEXPVT=~/Maildir/shared/%%u prefix = shared/%%u/ separator = / subscriptions = yes type = shared } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { acl = vfile acl_shared_dict = proxy::acl expire = Trash expire2 = Trash/* expire3 = Spam expire4 = Junk expire_dict = proxy::expire quota = dict:user::file:/var/vmail/%d/%n/.quotausage sieve = file:~/sieve;active=~/.dovecot.sieve sieve_after = ~/.sieve } postmaster_address = admin(a)domain.tld protocols = imap lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0600 user = vmail } user = root } service dict { unix_listener dict { group = vmail mode = 0660 user = vmail } } service imap-login { client_limit = 1000 process_limit = 500 } service lmtp { inet_listener lmtp { address = 127.0.0.1 port = 24 } } service managesieve-login { inet_listener sieve { port = 4190 } } ssl = required ssl_cert = </etc/ssl/own_certs/certs/stern.domain.tld.chain.crt ssl_key = </etc/ssl/own_certs/private/stern.domain.tld.key ssl_protocols = !SSLv2 !SSLv3 userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol imap { mail_max_userip_connections = 100 mail_plugins = quota imap_quota expire acl imap_acl } protocol pop3 { mail_plugins = quota pop3_uidl_format = %08Xu%08Xv } protocol lda { mail_plugins = sieve quota } protocol lmtp { mail_plugins = sieve quota }

2 1

HG port=0 changes still problematic
by Thomas Leuxner 31 Aug '15

31 Aug '15

Aug 30 12:35:04 nihlus.leuxner.net systemd[1]: Started Dovecot IMAP/POP3 email server. Aug 30 12:35:04 nihlus.leuxner.net dovecot[60404]: doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/10-master.conf line 24: Invalid port number 0 Aug 30 12:35:04 nihlus.leuxner.net systemd[1]: dovecot.service: main process exited, code=exit System with HG e1c7fcd62813 fails on inet_listener imaps { port = 0 #port = 993 #ssl = yes } Regards Thomas

3 3

Post-migration questions
by Grant 29 Aug '15

29 Aug '15

I just migrated from courier-imap to dovecot and dovecot is a lot faster. My only client is webmail on the same server as dovecot. Max ~10 users. Should I still run imapproxy like I did with courier? Does dovecot periodically empty the trash folder like courier does? I reduced the number of processes courier was running to save RAM and improve performance. Are there any performance tweaks I should consider for dovecot? - Grant

2 2

IMAP hibernate feature committed
by Timo Sirainen 29 Aug '15

29 Aug '15

http://hg.dovecot.org/dovecot-2.2/rev/64c73e6bd397 Today I finally committed the "imap-hibernate" feature that I first started developing about a year ago (and had been thinking about for several years before that). The main purpose here is to reduce the number of imap processes and the amount of memory they use by moving IDLEing connections into imap-hibernate processes where they are waiting for something to happen (changes to the mailbox or IMAP client to do something). Mailbox changes are noticed only if inotify/kqueue is enabled, so without them the hibernation feature won't work well. For now only the IMAP connections that are in IDLE can be hibernated. In theory non-IDLEing connections could also be hibernated, but the main problem here is that if EXPUNGEs can't be sent at the time the hibernation is over, the current code can't handle it. They would require recreating a view that contains such expunged messages, which could be possible with some extra work. Some IMAP extensions aren't supported yet: - NOTIFY: This would just need to import/export the NOTIFY state. Also hibernation could be done at any time if VANISHED replies could be sent to the selected mailbox. - SEARCH=CONTEXT: A bit more troublesome extension to support. I'm not sure how big the trouble would be. It's rarely used though. - COMPRESS: The [de]compression code would need to be moved to login process instead of being done in imap-compress plugin. This would be a larger change, although it's also useful for various other purposes. The hibernation can be enabled for now simply by setting imap_hibernate_timeout setting to non-zero, which controls how long to wait after client has issued IDLE (and nothing happens) until the process hibernates. Some future work might include: - Moving the hibernation all the way to the first Dovecot proxy layer to avoid the need for imap-hibernate process at all. (Also moving the COMPRESS handling all the way there.) - Dynamically adjusting when the client should be hibernated instead of just a fixed imap_hibernate_timeout setting. Especially try to avoid such a situation where the hibernation is almost always terminated soon after it started. Although that probably is unlikely, so maybe not worth the trouble to prevent.. - Hibernation could be used to control the load of the server. If it's running too slow or if there are already too many imap processes, some of the connections could be moved to hibernation stage. Or just kept in hibernation for a while longer even after the imap process would normally be recreated (e.g. wait for several minutes before reporting new emails, or several seconds before replying to DONE). - The EXPUNGE/VANISHED and FETCH FLAGS replies aren't sent asynchronously, but instead fully buffered to the output buffer. This works as long as the list of changes after hibernation isn't huge, but otherwise it's wasting a lot of memory. - Maybe support non-inotify/kqueue change notifications from lib-storage. This could be complicated though to do efficiently. Or a simple way would be to just send a UDP or UNIX datagram packet on all changes to all the imap-hibernate processes and see if anybody cares about those. I'm not sure how efficient that would be.

4 13

virtual users with postfix
by Andreas Meyer 29 Aug '15

29 Aug '15

Hello! My passwd file looks like this: info@nimmini.de:{CRAM-MD5}e33cbd144b372a9c919228923464c806b57e35df2d6d1484ceaabe7e3530cd58:5000:5000::/var/spool/vhosts/nimmini.de/info::userdb_mail=maildir:~/ When I login for the first time, I see this in the log: Aug 29 09:52:57 imap(info(a)nimmini.de): Error: mkdir_parents(/var/lib/dovecot/db) failed: Permission denied Aug 29 09:52:57 imap(info(a)nimmini.de): Error: acl: dict commit failed Although the mailbox "info" is created with this content: drwx------ 2 5000 5000 4096 29. Aug 09:52 cur -rw------- 1 5000 5000 0 29. Aug 09:52 dovecot-acl-list -rw------- 1 5000 5000 272 29. Aug 09:52 dovecot.index.log -rw------- 1 5000 5000 72 29. Aug 09:52 dovecot.mailbox.log -rw------- 1 5000 5000 51 29. Aug 09:52 dovecot-uidlist -rw------- 1 5000 5000 8 29. Aug 09:52 dovecot-uidvalidity -r--r--r-- 1 5000 5000 0 29. Aug 09:52 dovecot-uidvalidity.55e164dc drwx------ 5 5000 5000 4096 29. Aug 09:52 .Drafts drwx------ 2 5000 5000 4096 29. Aug 09:52 new drwx------ 5 5000 5000 4096 29. Aug 09:52 .Sent -rw------- 1 5000 5000 18 29. Aug 09:52 subscriptions drwx------ 2 5000 5000 4096 29. Aug 09:52 tmp drwx------ 5 5000 5000 4096 29. Aug 09:52 .Trash /var/lib looks like this: ... drwxr-xr-x 2 root root 4096 29. Aug 00:28 dovecot ... Should the folder dovecot be owned by the user dovecot? What causes the error above? Greetings Andreas

4 9

Dovecot proxy and password scheme updating
by efs efefsfse 28 Aug '15

28 Aug '15

Hello, I run a dovecot proxy (which is doing authentification itself) and a dovecot backend on separate boxes. I want to change the actual password scheme. Since postlogin scripting is not supported by proxies and %w variable is not forwaded to dovecot backend is there any way that I can update the password scheme with my current setup ? Thanks in advance.

1 0

Allow delivery to existing accounts only with LDAP and static
by Miloslav Hůla 28 Aug '15

28 Aug '15

Hi, we are using LDAP binding as a passdb, and static with allow_all_users=yes as an userdb. Works fine, but problem is, Maildirs are created for non-existent accounts too. We would like to prevent it. The LDAP binding does not supporta user lookups. Is the correct way to use checkpassword as a passdb before LDAP, check for account existency here and: result_success=continue result_failure=return-fail ? Thank you, regards, Miloslav

2 4

Merging maildirs
by Petter Gunnerud 28 Aug '15

28 Aug '15

Hi List How do I merge files from one maildir into another maildir? Long version: I've been using dovecot/postfix for a 12 user environment for several years, and today was the first time I ran into an issue I could not solve from reading the documentation. The server is gentoo running on esxi. A few times a year I've made a snapshot of the server and copied the files to my home esxi server as a full system backup. 5 days ago the internet connection at the office broke, and I decided to power on the last copy of the server at my home and change public dns so that users could access their new mails via webmail from this spare server. (I didn't allow imap through firewall.) Now the network at the office is back. DNS is updated so that mails are delivered to the office server again. But all the mails sent / received during those 5 days is only at my house. How can I merge those into the office server?I'd like to do this as a server administrator. I do not want to have each user forward the mails to them self from the temporarily webmail. I tried to just copy the mail files on my own account - like I did once when I used courier-imap, but that did not work with dovecot. I hope someone has an idea of how to solve this.

3 2

Panic in service(log)
by Eugene Paskevich 27 Aug '15

27 Aug '15

Hello, I'm using the Debian builds of dovecot-2.2 by S[r]us. Today I started getting the following panic: log: Panic: file priorityq.c: line 122 (priorityq_remove_idx): assertion failed: (idx < count) log: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x7f1ae) [0x7fd368dc31ae] -> /usr/lib/dovecot/libdovecot.so.0(+0x7f269) [0x7fd368dc3269] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fd368d6c81e] -> /usr/lib/dovecot/libdovecot.so.0(+0xa0de8) [0x7fd368de4de8] -> /usr/lib/dovecot/libdovecot.so.0(priorityq_remove+0xb) [0x7fd368de4eeb] -> /usr/lib/dovecot/libdovecot.so.0(+0x9179c) [0x7fd368dd579c] -> /usr/lib/dovecot/libdovecot.so.0(master_status_update+0x93) [0x7fd368d71263] -> /usr/lib/dovecot/libdovecot.so.0(+0x2ecf3) [0x7fd368d72cf3] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) [0x7fd368dd6b2c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xc5) [0x7fd368dd7e35] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) [0x7fd368dd6bb5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7fd368dd6d58] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7fd368d72213] -> dovecot/log(main+0x11c) [0x555e9f81771c] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fd3689bcb45] -> dovecot/log(+0x277d) [0x555e9f81777d] master: Error: service(log): child 28845 killed with signal 6 (core dumps disabled) Could anyone please advise? -- Eugene Paskevich | *==)----------- | Plug me into eugene(a)raptor.kiev.ua | -----------(==* | The Matrix

2 2

mailbox deletion is not replicated correctly
by Dennis Kuhn 27 Aug '15

27 Aug '15

i can't delete several folders at once. I have a folder structure like folder1/folder2/folder3 (we use slash as hierarchy separator). When i delete folder1 server1 executes the command correctly Apr 16 13:44:28 server1 dovecot: imap(d.kuhn(a)heinlein-support.de): Mailbox deleted: INBOX/Trash/folder1/folder2/folder3 Apr 16 13:44:28 server1 dovecot: imap(d.kuhn(a)heinlein-support.de): Mailbox deleted: INBOX/Trash/folder1/folder2 Apr 16 13:44:28 server1 dovecot: imap(d.kuhn(a)heinlein-support.de): Mailbox deleted: INBOX/Trash/folder1 but the replica server2 reverses the order: Apr 16 13:44:29 server2 dovecot: dsync-server(d.kuhn(a)heinlein-support.de): Mailbox deleted: INBOX/Trash/folder1 Apr 16 13:44:29 server2 dovecot: dsync-server(d.kuhn(a)heinlein-support.de): Mailbox deleted: INBOX/Trash/folder1/folder2 Apr 16 13:44:29 server2 dovecot: dsync-server(d.kuhn(a)heinlein-support.de): Mailbox deleted: INBOX/Trash/folder1/folder2/folder3 This creates the folder INBOX/Trash/folder1/folder2 on server2 again which replicates back to server1. Regards, Dennis Kuhn -- Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-57 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

3 4

mail_log proposal: recipient
by Peter Chiochetti 27 Aug '15

27 Aug '15

As Timo seems to be on a committing spree; I'd like to propose that in the mail_log_fields the recipient would be available. Like probably many dovecot users, my MUAs save to Sent; so when grepping the log to learn etc. that would just be useful Kind regards -- peter

2 2

Duplicate folder names
by Paulo Matos 26 Aug '15

26 Aug '15

Hi, I have setup message filtering and for example, I might move a message which a given sender to folder special/. This folder is created and shows up twice in INBOX/special/ and special/. They are however exactly the same folder. If I subscribe to one I am automatically subscribed to the other and viceversa. Not too happy with this configuration. I have a feeling this is related to namespaces but I am not sure in which way to configure things in order to have only INBOX/special but not special/. How can I set this up. My current configuration is: $ dovecot -n # 2.2.18: /etc/dovecot/dovecot.conf # OS: Linux 4.1.0-x86_64-linode59 x86_64 Fedora release 22 (Twenty Two) ext4 auth_debug = yes auth_mechanisms = plain login digest-md5 cram-md5 auth_verbose = yes auth_verbose_passwords = yes default_internal_user = root imap_client_workarounds = delay-newmail tb-extra-mailbox-sep mail_debug = yes mail_location = maildir:/home/vmail/%d/%n/Maildir maildir_very_dirty_syncs = yes mbox_write_locks = fcntl namespace { inbox = yes location = prefix = INBOX. separator = . type = private } namespace inbox { 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } postmaster_address = pmatos protocols = imap quota_full_tempfail = yes service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { mode = 0600 user = vmail } user = $default_internal_user } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { args = uid=5000 gid=5000 home=/home/vmail/%d/%n allow_all_users=yes driver = static } protocol lda { auth_socket_path = /var/run/dovecot/auth-master deliver_log_format = msgid=%m: %$ log_path = /home/vmail/dovecot-deliver.log } protocol imap { mail_max_userip_connections = 100 } Regards, Paulo Matos

2 2

PROXY protocol
by Hoggins! 26 Aug '15

26 Aug '15

Hello folks, Any plans on implementing the PROXY protocol to allow Dovecot being behind a TCP proxy, and still logging the real IP address of the users ? See : http://blog.haproxy.com/haproxy/proxy-protocol/ Thanks !

6 15

Shared Mailboxes Not Visible
by Mark Usrey 26 Aug '15

26 Aug '15

OK, gurus, I've spent the last 2 days crawling through all of the posts and web postings regarding shared folders, and I simply cannot get it to work. I'm sure that there is something simple that I've overlooked, but cannot for the life of me see it :) Here's my current config: # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.16.0-46-generic x86_64 Ubuntu 14.04.3 LTS xfs auth_mechanisms = plain login debug_log_path = /var/log/debug.log listen = * mail_gid = mail mail_location = mdbox:/mail/data/private/%n:INDEX=/mail/index/private/%n mail_plugins = acl notify mail_log stats mail_privileged_group = mail namespace { list = children location = mdbox:/mail/data/shared/%%n:INDEXPVT=/mail/index/private/%n/shared_indices/%%n prefix = Shared/%%n/ separator = / subscriptions = no 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 } prefix = separator = / type = private } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile acl_shared_dict = file:/mail/dict/shared-mailboxes autocreate = Trash autocreate2 = Spam autocreate3 = Drafts autocreate4 = Junk autosubscribe = Trash autosubscribe2 = Spam autosubscribe3 = Drafts autosubscribe4 = Junk mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change append mail_log_fields = uid box msgid size subject stats_refresh = 30 secs stats_track_cmds = yes } protocols = " imap lmtp" service auth { unix_listener /var/spool/postfix/private/auth { user = postfix } } service dict { unix_listener dict { group = mail mode = 0600 user = root } } service imap-login { process_min_avail = 5 service_count = 0 } service imap { process_limit = 4096 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service stats { fifo_listener stats-mail { group = mail mode = 0660 user = root } } ssl_ca = </etc/dovecot/thawte2.crt ssl_cert = </etc/dovecot/dovecot2.pem ssl_key = </etc/dovecot/private/solaray-sunglasses.com.key userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { postmaster_address = postmaster(a)solaray-sunglasses.com } protocol imap { mail_plugins = acl notify mail_log stats imap_acl imap_stats } All of our users are "real" (no virtual users or domains) and only a single domain supported. We have a user, rself, that is attempting to share his inbox with a few others that also need access to it. So the corresponding ACL files: root@srv56:/mail/data/shared/rself# ls -la /mail/data/shared/rself/ total 20 drwx------ 4 rself mail 79 Aug 24 15:22 . drwxrwx--- 7 mail mail 71 Aug 24 16:01 .. -rw------- 1 rself mail 17 Aug 24 15:22 dovecot-acl-list drwx------ 10 rself mail 130 Aug 24 12:28 mailboxes drwx------ 2 rself mail 12288 Aug 25 16:25 storage -rw------- 1 rself mail 70 Aug 24 12:28 subscriptions And the contents of dovecot-acl-list: root@srv56:/mail/data/shared/rself# cat dovecot-acl-list 1440447778 INBOX root@srv56:/mail/data/shared/rself# And the mailbox-specific files: root@srv56:/mail/data/shared/rself/mailboxes/INBOX/dbox-Mails# ls -la total 4 drwx------ 2 rself mail 24 Aug 25 08:16 . drwx------ 3 rself mail 23 Aug 24 12:28 .. -rw------- 1 rself mail 24 Aug 24 15:22 dovecot-acl root@srv56:/mail/data/shared/rself/mailboxes/INBOX/dbox-Mails# Content: root@srv56:/mail/data/shared/rself/mailboxes/INBOX/dbox-Mails# cat dovecot-acl user=musrey akxeilprwts root@srv56:/mail/data/shared/rself/mailboxes/INBOX/dbox-Mails# Now, the global ACL dictionary (just a flat file, not enough users to justify SQL :) root@srv56:~# ls -la /mail/dict/ total 12 drwxrwxr-x 2 root mail 4096 Aug 24 18:05 . drwxr-xr-x 5 root root 4096 Aug 23 08:51 .. -rw-r--r-- 1 rself mail 40 Aug 24 18:05 shared-mailboxes And contents: root@srv56:~# cat /mail/dict/shared-mailboxes shared/shared-boxes/user/musrey/rself 1 root@srv56:~# So, as far as I can tell from my RTFM activities, I think the configuration is correct. Now, I go to attempt to check the ACL using doveadm, and I get this: root@srv56:~# doveadm acl debug -u musrey Shared/rself/INBOX doveadm(musrey): Error: Can't open mailbox Shared/rself/INBOX: Mailbox doesn't exist: Shared/rself/INBOX root@srv56:~# WTH, over? So, not thinking this is an ACL issue, but simply a namespace issue - either I have the shared namespace configured incorrectly, or I'm using it incorrectly in attempting to identify rself's INBOX when trying to verify that the ACL is working. So, I thought to myself, let's try a mailbox list, so I executed root@srv56:~# doveadm mailbox list -u musrey ACT! ACT!/General AES Outdoors AES Outdoors/Christy AES Outdoors/Gwen .... (many, many mailboxes in here - I should probably eliminate some of them :) VMWare Watchguard Xata Corporation Xata Corporation/Mike Brossman Xata Corporation/Mike Uremovich INBOX root@srv56:~# But no "Shared" or "rself" to be found. Help, please. I'm quickly going bald over this one. -- *Mark Usrey* Director of Information Technologies *Solaray LLC Solaray LLC* 620 S. Linden Sapulpa, Ok 74066 (918) 227-0722 Ext. 527

1 0

sieve_after seems to ignored ?
by Per Jessen 25 Aug '15

25 Aug '15

sieve and managesieve are both working fine, have been for years. Now I want to add a sieve_after script: /etc/dovecot/conf.d/90-sieve.conf : plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_before = sieve_after = ~/sieve/personal.sieve sieve_subaddress_sep = + } I have compiled ~/sieve/personal.sieve to ~/sieve/personal.svbin, but it doesn't seem to be read. Any hints? thanks Per Jessen -- Per Jessen, Zürich (17.2°C) http://www.hostsuisse.com/ - dedicated server rental in Switzerland.

3 6

ldap attribute modifiers. how to lowercase non ASCII
by matthias lay 24 Aug '15

24 Aug '15

hi all, I encountered some problem with lowercasing chars like an "Ä" with user_attrs like this: user_attrs = uid=home=/mail/%Lu, =myvar=%L{ldap:uid} the Ä doesnt get lower cased in both cases # doveadm user BLÄTULA field value user blÄtula uid vmail gid vmail home /mail/blÄtula mail maildir:~/Maildir:LAYOUT=fs:INBOX=~/Maildir/INBOX myvar blÄtula somebody knows if there a fix for that? Greetz Matze

2 2

Store ACL files within shared mailbox / rename shared folder problem
by Chris Laif 24 Aug '15

24 Aug '15

Hi. If $otheruser shares a mailbox to $myuser, my private index is stored in *my* Maildir, according to this template (from the dovecot docs): mail_location = maildir:%%h/Maildir:INDEXPVT=%h/Maildir/shared/%%u If $otheruser renames the shared mailbox, all my private mail flags (Seen) are lost because my mailclient couldn't find the private index anymore. Is there any way to store the private index within the shared mailbox? If $otheruser renames the mailbox, the index will be 'migrated' as well. Something like this: /data/mails/$otheruser/Maildir/.MagicSharedFolder/shared/$myuser.dovecot.index.pvt.log I see no way on how to do craft a INDEXPVT for this. Kind regards, Chris

2 1

plugin antispam sa-learn run program failed with exit code -1
by Guillaume Lakano - DOVECOT 24 Aug '15

24 Aug '15

Hello ! I've installed iRedMail on an Ubuntu Server 14.04.1 I'm not the only one on the iRedMail forum to have the problem, but the developpers of iRedMail doesn't found the problem and advice me to ask you directly. When I want to move an email directly to /Junk/ this not works. In Thunderbird, the error is : "[SERVERBUG] failed to send mail" In RoundCube, the error is : "Server Error: UID MOVE: failed to send mail ." But, if we firstly delete the email, then move the email from /Trash/ to /Junk/ this works. Here is the package versions: dovecot 2.2.9-1ubuntu2.1 dovecot-antispam 2.0+20130822-2build1 spamassassin 3.4.0-1ubuntu2.1 I have enabled antispam-debug in syslog, and the sa-learn seems to return an error: Aug 20 20:21:13 mail imap: antispam: plugin initialising (2.0-notgit) Aug 20 20:21:13 mail imap: antispam: verbose debug enabled Aug 20 20:21:13 mail imap: antispam: "Junk" is exact match spam folder Aug 20 20:21:13 mail imap: antispam: no unsure folders Aug 20 20:21:13 mail imap: antispam: "Trash" is exact match trash folder Aug 20 20:21:13 mail imap: antispam: pipe backend spam argument = --spam Aug 20 20:21:13 mail imap: antispam: pipe backend not-spam argument = --ham Aug 20 20:21:13 mail imap: antispam: pipe backend program = /usr/bin/sa-learn Aug 20 20:21:13 mail imap: antispam: pipe backend program arg[0] = -D --username=guillaume.XXXX(a)nydomain.com Aug 20 20:21:13 mail imap: antispam: pipe backend tmpdir /tmp Aug 20 20:21:14 mail imap: antispam: mailbox_is_unsure(Junk): 0 Aug 20 20:21:14 mail imap: antispam: mailbox_is_trash(INBOX): 0 Aug 20 20:21:14 mail imap: antispam: mailbox_is_trash(Junk): 0 Aug 20 20:21:14 mail imap: antispam: mail copy: from trash: 0, to trash: 0 Aug 20 20:21:14 mail imap: antispam: mailbox_is_spam(INBOX): 0 Aug 20 20:21:14 mail imap: antispam: mailbox_is_spam(Junk): 1 Aug 20 20:21:14 mail imap: antispam: mailbox_is_unsure(INBOX): 0 Aug 20 20:21:14 mail imap: antispam: mail copy: src spam: 0, dst spam: 1, src unsure: 0 Aug 20 20:21:14 mail imap: antispam: running mailtrain backend program /usr/bin/sa-learn Aug 20 20:21:14 mail imap: antispam: running mailtrain backend program /usr/bin/sa-learn Aug 20 20:21:14 mail imap: antispam: running mailtrain backend program parameter 1 -D --username=guillaume.XXXX(a)mydomain.com Aug 20 20:21:14 mail imap: antispam: running mailtrain backend program parameter 2 --spam Aug 20 20:21:16 mail imap: antispam: run program failed with exit code -1 There is no other log in /var/log/dovecot.log or /var/log/mail.log Here is my dovecot configuration: # dovecot -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-62-generic x86_64 Ubuntu 14.04.1 LTS auth_master_user_separator = * auth_mechanisms = PLAIN LOGIN dict { acl = mysql:/etc/dovecot/dovecot-share-folder.conf quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf } first_valid_uid = 2000 last_valid_uid = 2000 listen = * [::] log_path = /var/log/dovecot.log mail_gid = 2000 mail_location = maildir:%Lh/Maildir/:INDEX=%Lh/Maildir/ mail_plugins = quota mailbox_alias acl mail_uid = 2000 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 = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { auto = no special_use = \Sent } mailbox Spam { auto = no special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } namespace { list = children location = maildir:%%Lh/Maildir/:INDEX=%%Lh/Maildir/Shared/%%u prefix = Shared/%%u/ separator = / subscriptions = yes type = shared } passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } passdb { args = /etc/dovecot/dovecot-master-users driver = passwd-file master = yes } plugin { acl = vfile acl_shared_dict = proxy::acl antispam_backend = pipe antispam_debug_target = syslog antispam_pipe_program = /usr/bin/sa-learn antispam_pipe_program_args = --username=%Lu antispam_pipe_program_notspam_arg = --ham antispam_pipe_program_spam_arg = --spam antispam_spam = Junk antispam_trash = Trash antispam_verbose_debug = 1 auth_socket_path = /var/run/dovecot/auth-master mailbox_alias_new = Sent Messages mailbox_alias_new2 = Sent Items mailbox_alias_old = Sent mailbox_alias_old2 = Sent quota = dict:user::proxy::quotadict quota_rule = *:storage=1G quota_warning = storage=85%% quota-warning 85 %u quota_warning2 = storage=90%% quota-warning 90 %u quota_warning3 = storage=95%% quota-warning 95 %u sieve = %Lh/sieve/dovecot.sieve sieve_before = /var/vmail/sieve/dovecot.sieve sieve_dir = %Lh/sieve sieve_execute_bin_dir = /usr/lib/dovecot/sieve-execute sieve_filter_bin_dir = /usr/lib/dovecot/sieve-filter sieve_global_dir = /var/vmail/sieve sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.filter +vnd.dovecot.execute sieve_pipe_bin_dir = /usr/lib/dovecot/sieve-pipe sieve_plugins = sieve_extprograms } protocols = pop3 imap sieve lmtp service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { group = vmail mode = 0666 user = vmail } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service dict { unix_listener dict { group = vmail mode = 0660 user = vmail } } service imap-login { process_limit = 500 service_count = 1 } service lmtp { executable = lmtp -L inet_listener lmtp { address = 127.0.0.1 port = 24 } process_min_avail = 5 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } user = vmail } service managesieve-login { inet_listener sieve { address = 127.0.0.1 port = 4190 } } service pop3-login { service_count = 1 } service quota-warning { executable = script /usr/local/bin/dovecot-quota-warning.sh unix_listener quota-warning { group = vmail mode = 0660 user = vmail } } ssl = required ssl_cert = </etc/ssl/certs/iRedMail.crt ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA ssl_dh_parameters_length = 2048 ssl_key = </etc/ssl/private/iRedMail.key ssl_prefer_server_ciphers = yes ssl_protocols = !SSLv2 !SSLv3 userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { auth_socket_path = /var/run/dovecot/auth-master lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes log_path = /var/log/dovecot-sieve.log mail_plugins = quota mailbox_alias acl sieve postmaster_address = root } protocol lmtp { info_log_path = /var/log/dovecot-lmtp.log lmtp_save_to_detail_mailbox = yes mail_plugins = quota sieve postmaster_address = postmaster recipient_delimiter = + } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_max_userip_connections = 20 mail_plugins = quota mailbox_alias acl imap_quota imap_acl antispam } protocol pop3 { mail_max_userip_connections = 20 mail_plugins = quota mailbox_alias acl pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } I don't known if it's a problem related to dovecot or to spamassassin. If you could help me to solve the problem, this will be really appreciated :) Regards

4 6

Delivering email to Maildir PreINBOX
by Paulo Matos 24 Aug '15

24 Aug '15

Hi all, I have a running dovecot with: $ dovecot -n # 2.2.18: /etc/dovecot/dovecot.conf # OS: Linux 4.1.0-x86_64-linode59 x86_64 Fedora release 22 (Twenty Two) ext4 auth_debug = yes auth_mechanisms = plain login digest-md5 cram-md5 auth_verbose = yes auth_verbose_passwords = yes default_internal_user = root imap_client_workarounds = delay-newmail tb-extra-mailbox-sep mail_debug = yes mail_location = maildir:/home/vmail/%d/%n/Maildir maildir_very_dirty_syncs = yes mbox_write_locks = fcntl namespace { inbox = yes location = prefix = INBOX. separator = . type = private } namespace inbox { 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } postmaster_address = pmatos protocols = imap quota_full_tempfail = yes service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { mode = 0600 user = vmail } user = $default_internal_user } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { args = uid=5000 gid=5000 home=/home/vmail/%d/%n allow_all_users=yes driver = static } protocol lda { auth_socket_path = /var/run/dovecot/auth-master deliver_log_format = msgid=%m: %$ log_path = /home/vmail/dovecot-deliver.log } protocol imap { mail_max_userip_connections = 100 } I started to filter my email with imapfilter running on the same host as dovecot. I would therefore like to deliver email to a folder called PreINBOX so that imapfilter then sorts the email and ends up delivering only the useful email to INBOX. How can I change the name of the inbox dovecot delivers to? Best, -- Paulo Matos

1 1

IMAP Folder Mail Separator
by Alex 23 Aug '15

23 Aug '15

Hi, I have a fedora21 install with dovecot-2.2.18, and when creating a new subfolder with thunderbird, the actual folder name is "Folder1^Folder2" with a carat as a separator, instead of creating Folder2 in the Folder1 directory. Is this a thunderbird problem? I don't recall having this problem prior to upgrading to fedora21, so thought maybe it's a dovecot problem. Maybe the separator character is customizable? Thanks, Alex

3 5

migrating servers
by chris 23 Aug '15

23 Aug '15

Hi I am trying to migrate from a Centos dovecot 1.0.7 install to a debian dovecot 2.1.7 install. I thought simply replicating the maildirs would be fine (using rsync) but when I fetch mail from the new server using IMAP thunderbird wants to download all the messages again as duplicates. I searched the wiki over to see if I could find a solution and while it appeared I could use doveadm backup that seems to only work pushing changes from the new server to the old (wrong direction) and that program does not exist on the earlier version of dovecot on the old server. If I can be very blunt the documentation on the wiki assumes far too much knowledge from the reader. It is often hard to decipher exactly what is meant by many of the obtuse instructions. But that is an aside can anyone give me pointers on how to do this migration for all my users so they don't need to sort through hundreds of duplicated emails? Chris

2 1

Delivering email to Maildir PreINBOX
by Paulo Matos 22 Aug '15

22 Aug '15

Hi all, I have a running dovecot with: $ dovecot -n # 2.2.18: /etc/dovecot/dovecot.conf # OS: Linux 4.1.0-x86_64-linode59 x86_64 Fedora release 22 (Twenty Two) ext4 auth_debug = yes auth_mechanisms = plain login digest-md5 cram-md5 auth_verbose = yes auth_verbose_passwords = yes default_internal_user = root imap_client_workarounds = delay-newmail tb-extra-mailbox-sep mail_debug = yes mail_location = maildir:/home/vmail/%d/%n/Maildir maildir_very_dirty_syncs = yes mbox_write_locks = fcntl namespace { inbox = yes location = prefix = INBOX. separator = . type = private } namespace inbox { 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } postmaster_address = pmatos protocols = imap quota_full_tempfail = yes service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { mode = 0600 user = vmail } user = $default_internal_user } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { args = uid=5000 gid=5000 home=/home/vmail/%d/%n allow_all_users=yes driver = static } protocol lda { auth_socket_path = /var/run/dovecot/auth-master deliver_log_format = msgid=%m: %$ log_path = /home/vmail/dovecot-deliver.log } protocol imap { mail_max_userip_connections = 100 } I started to filter my email with imapfilter running on the same host as dovecot. I would therefore like to deliver email to a folder called PreINBOX so that imapfilter then sorts the email and ends up delivering only the useful email to INBOX. How can I change the name of the inbox dovecot delivers to? Best, -- Paulo Matos

4 5

Error: User initialization failed
by ＠lbutlr 19 Aug '15

19 Aug '15

OK, I obviously forgot something when setting up new user accounts (which I did via postfix admin to add them to the MySQL database): dovecot: lda(chance(a)example.com): Error: User initialization failed: Namespace '': Ambiguous mail location setting, don't know what to do with it: /usr/local/virtual/chance@ example.com (try prefixing it with mbox: or milder:) I have lots of mysql users defined and working, but do I need to manually create the mail store for new ones? (Sorry, it’s been quite a long time since I had to add accounts). -- You start a conversation you can't even finish it You're talkin' a lot, but you're not sayin' anything When I have nothing to say, my lips are sealed Say something once, why say it again?

2 3

logging into user mailboxes with admin credentials
by Noam Birnbaum 19 Aug '15

19 Aug '15

Hey folks, We are planning a migration away from Dovecot (sorry) to Google Apps and are trying to figure out how to migrate the contents of user mailboxes to the new provider. Normally we would use an IMAP migration tool to log into each user's mailbox on the old and new providers and transfer the data that way. However, there is no central directory service; all accounts are local. We have a large number of users and for both management and security reasons it's not feasible to compile a list of all IMAP passwords. Is there a way to log into user IMAP accounts on Dovecot using a central administrative credential? Thanks! Warmest and bestest, Noam 510-332-3828 cell Noam Birnbaum Mac Daddy http://www.maccentricsolutions.com 877.luv.macs x666 tweet @noamb Tech support ---> 877.luv.macs or support(a)maccentricsolutions.com Luvvv us? _Yelp us!_ <http://www.yelp.com/biz/maccentric-solutions-san-francisco>

2 1

NFSv4 delegation
by brd 18 Aug '15

18 Aug '15

hi all, i'm managing a large installation of a dovecot cluster in director + NFS backend architecture and we are moving from NFSv3 to NFSv4. Our NFS server is a Netapp in clustered mode and reading technical specs of NFSv4 delegation feature it seems that enabling delegation in this type of dovecot architecture should bring great benefits: only one backend server access a specific mailbox at a time (even deliveries are managed by director hashing via LMTP) so the getattr rpc calls should decrease significantly while the risk of conflicting delegations is very low (impacting negatively on the benefits obtainable). Can anyone confirm this hypothesis? I've heard that the linux implementation of NFSv4 delegation is mature only for read delegation (and not yet for write delegation): is this true? And, if true, could this fact limit the benefits of activating NFS delegation feature? Best regards -brd

4 11

pop3-login: Disconnected (tried to use disallowed plaintext auth)
by Benjamin Cimerman 18 Aug '15

18 Aug '15

Hi I have problem with dovecot 2.2.10 - plaintext auth without SSL is not working. I'm upgrading old server and want that settings "stay same" as on old server. SSL has to be optional. /var/log/maillog *pop3-login: Disconnected (tried to use disallowed plaintext auth): user=<>, rip=_._._._, lip=_._._._, session=<cxPkm4Ud5gBb7YZ/>* my settings: [root@mail dovecot]# grep ssl * -R -n *conf.d/10-ssl.conf:8:ssl = yes* *conf.d/10-ssl.conf:40:ssl_verify_client_cert = no* *conf.d/10-auth.conf:90:auth_ssl_require_client_cert = no* *dovecot.conf:7:ssl = yes* [root@mail dovecot]# grep plain * -R -n *conf.d/10-auth.conf:11:disable_plaintext_auth = no* *conf.d/10-auth.conf:101:auth_mechanisms = plain login* Thanx you for any help.

1 0

Segfaults after upgrade to Debian Jessie
by Andrew Beverley 18 Aug '15

18 Aug '15

Hi, I've just upgrade from Debian Wheezy to Debian Jessie and am getting: Fatal: master: service(lmtp): child 6761 killed with signal 11 (core dumped) It seems to be something to do with sieve. When I disable that from lmtp then everything works fine. OS: Debian Jessie Dovecot version: 2.2.13 CPU: x86 This is the gdb output: Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `dovecot/lmtp'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f8e4c94f626 in sieve_validator_register_command () from /usr/lib/dovecot/libdovecot-sieve.so.0 And dovecot -n # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 8.1 ext3 auth_mechanisms = plain login dict { sieve = mysql:/etc/dovecot/pigeonhole-sieve.dict } mail_location = maildir:/var/mail/vhosts/%d/%n mail_privileged_group = mail 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 vnd.dovecot.extdata 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 } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { sieve = dict:proxy::sieve;name=active sieve_dir = ~/sieve sieve_extdata_dict_uri = proxy::sieve sieve_plugins = sieve_extdata } protocols = " imap lmtp sieve" service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service dict { unix_listener dict { mode = 0600 user = vmail } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } ssl = required ssl_cert = </etc/ssl/certs/ctrlo.com.pem ssl_key = </etc/ssl/private/ctrlo.com.key userdb { driver = passwd } userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } protocol imap { mail_max_userip_connections = 20 } Any ideas? Thanks, Andy

2 16

multiple messages per second to a single mailbox
by Chad M Stewart 18 Aug '15

18 Aug '15

Dovecot 2.2.18 on CentOS 6 I have a pair of servers setup with MySQL, Postfix, and Dovecot. Replication is setup and working between the two dovecot instances. The problem I'm running into is that a single mailbox receives a lot of messages, at times the rate is multiple messages per second. Delivery from Postfix to Dovecot is via tcp based LMTP. When I do 'ps -aef|grep lmtp|wc -l' I get 62 and does not appear to go higher than that. At the moment I have 4500 and 8300 messages queued on two Postfix instances waiting to deliver via LMTP to the same dovecot instance. Deliveries only happen via LMTP and only one of the two nodes actually gets the deliveries. What I'm seeing is very high load on the system (40) and queues building on the Postfix side. Replication is keeping up. Looking at the logs now I see anywhere from 4-7 messages per second delivered to this single mailbox. I would like to increase that rate a lot. These machines are VMs hosted on Xenserver 6.x. I have them setup with 8 vCPUs (2 sockets with 4 cores per socket), the dom0 machines have dual HBA connectors back to a SAN and have 128 CPUs and 256GB of RAM and are not taxed. I added a 2nd virtual disk that is used for storing mailbox data. It is ext4 and has noatime set during mount. /var is also mounted with noatime. The performance graphs in XenCenter show nearly all 8 vCPUs at about 50%, and the writes on the mailbox data disk are about 20%. iostat is showing mostly <5 for await times for the disks, though I do see a 10 now and again. I'm guessing that maybe I'm hitting a mailbox locking issue and not sure how to reduce the contention and thereby increase the delivery rate to this mailbox. -Chad

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Syncing two mail servers?
by Knute Johnson 17 Aug '15

17 Aug '15

I currently have a mail server using Dovecot and sendmail. I was thinking I would like to have a backup of my mail and an additional server in case of hardware failure. Is it possible to run two identical or nearly identical server setups and sync the mail files between them? If it is possible, in general terms how would one go about this? Thanks, -- Knute Johnson

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