- dovecot - dovecot.org

File permissions: system groups for do not work for group/shared mailboxes
by Jens Kirchner 08 Sep '15

08 Sep '15

Hello! I am struggling to set up a group mailbox for users of a certain system group. I want to grant access to the mailbox on a filesystem mode by using the system groups. The problem, the set up works fine and when I use setfacl and grant permissions too each user manually, it works fine. However, I want to use a system user's group membership in order to grant access to these mailboxes insted of manually granting for each user. dovecot version: 2.2.9 This is the config part: namespace { location = maildir:/data/mail/public:LAYOUT=fs prefix = GROUP-MAILBOXES/ separator = / subscriptions = no type = public } ... passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } ... userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } filesystem permissions (getfacl): # file: GroupboxA/ # owner: root # group: root user::rwx user:user1:rwx group::rwx mask::rwx other::--- default:user::rwx default:user:user1:rwx default:group::rwx default:mask::rwx default:other::--- # file: GroupboxB/ # owner: root # group: root user::rwx group::rwx group:group1:rwx mask::rwx other::--- default:user::rwx default:group::rwx default:group:group1:rwx default:mask::rwx default:other::--- user1 is in roup1 When setting username-based permissions (GroupboxA), the mailbox is usable and subsribable; when setting groupname-based permissions (GroupboxB) it is not subscribable/usable. Thanks for your help in advance and best regards, Jens

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bug in acl_defaults_from_inbox option
by Marco Giunta 08 Sep '15

08 Sep '15

Hi at all, there is a bug in in acl_defaults_from_inbox option: if you define it with ANY value ('yes', 'no', 'whatyouwant', 'xxx') it acts like the value is ALWAYS 'yes', and Dovecot enable it; the only way to disable it, is comment it or delete from configuration file. With 'acl_defaults_from_inbox = no', or 'acl_defaults_from_inbox = whatyouwant', all my folders get ACLs from INBOX; in my case I want to only share INBOX, but also all other folders were shared. When you comment 'acl_defaults_from_inbox', Dovecot works like expected. Marco # 2.2.15: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.6 (3e924b1b6c5c+) # OS: Linux 2.6.18-400.1.1.el5 x86_64 Red Hat Enterprise Linux Server auth_master_user_separator = * auth_mechanisms = plain login disable_plaintext_auth = no doveadm_password = XXXXXXXXXXXXXXXXXXXXXXXX doveadm_port = 12345 first_valid_uid = 200 hostname = xxxxxxx.sissa.it imap_client_workarounds = delay-newmail lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lda_original_recipient_header = X-Original-To listen = * login_log_format_elements = user=<%u> PID=%p method=%m rip=%r lip=%l %c login_trusted_networks = XXX.XXX.1.172/30 XXX.XXX.24.0/23 mail_gid = mail mail_home = /var/spool/mail/%1n/%n mail_location = maildir:/var/spool/mail/%1n/%n:INDEX=/var/shared/indexes/%1n/%n mail_plugins = acl fts fts_solr mailbox_alias quota mail_shared_explicit_inbox = yes mail_uid = 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 duplicate imapflags notify mbox_write_locks = fcntl mmap_disable = yes namespace archives { hidden = no inbox = no list = children location = maildir:/var/spool/archives/%1n/%n:INDEX=/var/shared/indexes/%1n/%n/archives mailbox 2015 { auto = subscribe special_use = \Archive } prefix = Archives. separator = . subscriptions = no type = private } namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox INBOX_spam { auto = subscribe special_use = \Junk } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = . } namespace others { list = children location = maildir:/var/spool/mail/%%1n/%%n:INDEXPVT=/var/shared/indexes/%1n/%n/shared/%%n prefix = Other Users.%%n. separator = . subscriptions = no type = shared } passdb { args = /etc/dovecot/passwd.masterusers driver = passwd-file master = yes pass = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile:/etc/dovecot/global-acls:cache_secs=300 acl_defaults_from_inbox = no acl_shared_dict = file:/var/shared/dovecot/shared-mailboxes.dict fts = solr fts_autoindex = yes fts_autoindex_max_recent_msgs = 20 fts_solr = url=http://solr.localdomain:8080/solr/ mailbox_alias_new = INBOX_spam mailbox_alias_old = Junk quota = maildir:User quota:ns= quota2 = maildir:Archive quota:ns=Archives. quota2_rule = *:storage=20GB quota2_warning = storage=95%% quota2-warning 95 %u quota2_warning2 = storage=90%% quota2-warning 90 %u quota2_warning3 = storage=80%% quota2-warning 80 %u quota_rule = *:storage=5GB quota_rule2 = Trash:storage=+20%% quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Quota exceeded (mailbox for user 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=90%% quota-warning 90 %u quota_warning4 = storage=80%% quota-warning 80 %u sieve = file:~/sieve;active=~/sieve/.dovecot.sieve sieve_default = /etc/dovecot/sieve/dovecot.sieve sieve_extensions = +notify +imapflags sieve_max_redirects = 16 } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh postmaster_address = postmaster(a)sissa.it protocols = imap pop3 lmtp sieve rejection_reason = Your message to <%t> was automatically rejected for the following reason: %n%n%r service auth { inet_listener { port = 49494 } unix_listener auth-userdb { user = vmail } } service dict { unix_listener dict { user = vmail } } service doveadm { inet_listener { port = 26001 } } service imap-login { process_min_avail = 16 service_count = 0 } service imap { process_limit = 2048 } service lmtp { inet_listener lmtp { port = 24 } process_min_avail = 5 } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } process_min_avail = 16 service_count = 0 vsz_limit = 256 M } service quota-status { client_limit = 1 executable = /usr/libexec/dovecot/quota-status -p postfix inet_listener { port = 25001 } } service quota-warning { executable = script /usr/local/bin/dovecot-quota-warning.sh unix_listener quota-warning { user = vmail } user = vmail } service quota2-warning { executable = script /usr/local/bin/dovecot-quota2-warning.sh unix_listener quota2-warning { user = vmail } user = vmail } ssl_cert = </etc/pki/dovecot/certs/xxxxx-crt.pem ssl_key = </etc/pki/dovecot/private/Xxxxx-key.pem ssl_protocols = !SSLv2 !SSLv3 submission_host = xxxxxx.sissa.it:25 syslog_facility = local2 userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = acl fts fts_solr mailbox_alias quota sieve postmaster_address = xxxxxxx(a)sissa.it } protocol lda { info_log_path = log_path = mail_plugins = acl fts fts_solr mailbox_alias quota sieve syslog_facility = local2 } protocol imap { mail_max_userip_connections = 50 mail_plugins = acl fts fts_solr mailbox_alias quota imap_quota imap_acl } protocol sieve { mail_max_userip_connections = 50 } protocol pop3 { mail_max_userip_connections = 50 } -- ----------------------------------- |Marco Giunta - SISSA Computer Staff| |Via Bonomea, 265 | |34136 - Trieste, Italy | |Tel: +39-40-3787-503 | |Fax: +39-040-3787-244 | |e-mail: giunta(a)sissa.it | -----------------------------------

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[Patch] Fix hang in safe_sendfile on SmartOS
by Sebastian Wiedenroth 08 Sep '15

08 Sep '15

# HG changeset patch # User Sebastian Wiedenroth <sebastian.wiedenroth(a)skylime.net> # Date 1437050484 -7200 # Thu Jul 16 14:41:24 2015 +0200 # Node ID 7ef3a533b097e8e6590e754dc56ad308ab29233b # Parent e3640ccaa76d77a9658126d1f8f306480dad8af7 Fix hang in safe_sendfile on SmartOS The call to sendfile on SmartOS can fail with EOPNOTSUPP. This is a valid error code and documented in the man page. This error code needs to be handled or else dovecot will retry the sendfile call endlessly and hang. diff -r e3640ccaa76d -r 7ef3a533b097 src/lib/sendfile-util.c --- a/src/lib/sendfile-util.c Sat Jan 10 04:32:42 2015 +0200 +++ b/src/lib/sendfile-util.c Thu Jul 16 14:41:24 2015 +0200 @@ -116,7 +116,7 @@ if (errno == EINVAL) { /* most likely trying to read past EOF */ ret = 0; - } else if (errno == EAFNOSUPPORT) { + } else if (errno == EAFNOSUPPORT || errno == EOPNOTSUPP) { /* not supported, return Linux-like EINVAL so caller sees only consistent errnos. */ errno = EINVAL;

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Patch for "doveadm -f table" nit (was Re: Dovecot current number of connections being used.)
by Joseph Tam 08 Sep '15

08 Sep '15

> doveadm who -1 2>/dev/null | wc -l You have to redirect stderr to /dev/null because that's where the first header line is written to. The default format style (table) is inconsistent with the other formats (flow,pager,tab) that write headers and data to stdout. The following patch will pick this nit. This patch will require modifications to scripts that rely on doveadm writing headers to stderr. For example, the above doveadm command could be modified to doveadm who -1 | grep -vc '^username' -------------------------------------------------------------------------------- --- a/dovecot-2.2.16.rc1/src/doveadm/doveadm-print-table.c Wed Mar 18 15:40:40 2015 +++ b/dovecot-2.2.16.rc1/src/doveadm/doveadm-print-table.c Wed Mar 18 15:41:18 2015 @@ -151,3 +151,3 @@ for (i = 0; i < count; i++) { - if (i > 0) fprintf(stderr, " "); + if (i > 0) printf(" "); @@ -155,3 +155,3 @@ DOVEADM_PRINT_HEADER_FLAG_RIGHT_JUSTIFY) == 0) { - fprintf(stderr, "%-*s", (int)headers[i].length, + printf("%-*s", (int)headers[i].length, headers[i].title); @@ -158,3 +158,3 @@ } else { - fprintf(stderr, "%*s", (int)headers[i].length, + printf("%*s", (int)headers[i].length, headers[i].title); @@ -162,3 +162,3 @@ } - fprintf(stderr, "\n"); + printf("\n"); } -------------------------------------------------------------------------------- Joseph Tam <jtam.home(a)gmail.com>

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Re: Null deference pointer in dovecot-2.2.18
by 吴迪 08 Sep '15

08 Sep '15

Dear, use our static analysis tools, I find some bugs (Null deference pointer) for dovecot-2.2.18. Null deference pointer bugs often make program crashes, Please confim them, Thanks! 1. dovecot-2.2.18/src/config/config-request.c 332 'setting_export_section_name(ctx->prefix, def, children[i], i);', pointer 'children' in line 202 assigned NULL and if branch 'case SET_DEFLIST_UNIQUE' not execute, so pointer 'children' is always NULL. It load to a bug of null deference pointer In line 332. The same bugs also appeared in : 1. dovecot-2.2.18/src/lib-index/mail-index-fsck.c line 170 or 174, pointer 'kw_rec ' mybe NULL. 2.dovecot-2.2.18/src/lib-storage/mail-search-args-simplify line 349, pointer 'prev_arg' mybe NULL. best wishes~ Amy

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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.

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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.

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"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.

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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

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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 } } ############################

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