December 2021 - dovecot

Unexpected variable expand behavior
by Евгений Бахтин 09 Dec '21

09 Dec '21

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No source packages in APT repo?
by Shawn Heisey 08 Dec '21

08 Dec '21

I added a deb-src entry to my APT config matching the deb entry: deb https://repo.dovecot.org/ce-2.3-latest/ubuntu/focal focal main deb-src https://repo.dovecot.org/ce-2.3-latest/ubuntu/focal focal main When this is there, I see a warning when running "apt update". W: Skipping acquire of configured file 'main/source/Sources' as repository 'https://repo.dovecot.org/ce-2.3-latest/ubuntu/focal focal InRelease' does not seem to provide it (sources.list entry misspelt?) Were source packages excluded deliberately? The github repo for dovecot does not have a "debian" directory, which is the other route that would allow me to build packages. Thanks, Shawn

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#define DUPLICATE_LOCK_MAX_LOCKS 100
by Vladimir Gulas 08 Dec '21

08 Dec '21

Hello, dovecot --version 2.3.17 (e2aa53df5b) debug log: Debug: duplicate db: transaction: Too many duplicate IDs locked Debug: duplicate db: transaction: Check ID: too many IDs locked - .sieve with 100+ redirects ( 201 actually ) #define DUPLICATE_LOCK_MAX_LOCKS 100 It's not corresponding with sieve_max_redirects = 310 or sieve_max_actions = 320 On dovecot 2.3.16 version DUPLICATE_LOCK_MAX_LOCKS is not implemented and redirects work correctly. Thank you. Vladimir Gulas.

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app-specific passwords for dovecot
by mj 08 Dec '21

08 Dec '21

Hi all, I have read these documents on the subject of app-specific passwords: > https://www.dgsiegel.net/news/2013_05_21-application_specific_passwords_for… > https://www.happyassassin.net/posts/2014/08/26/adding-application-specific-… But since both articles are rather old, I'd like to ask if there are other/new ways of implementing app-specific passwords for dovecot/imap and postfix/smtp. Also perhaps (web?) GUI's exist, to make it possible for the users themselves to generate/edit those passwords..? Thanks for your suggestions! MJ

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vsz_limit
by Daniel Miller 07 Dec '21

07 Dec '21

I just noticed, that when checking "doveconf -a" - all vsz_limit settings that are not explicitly given have a value of: 18446744073709551615 B I have this on two servers, one with an implicit default_vsz_limit=256M, the other with an explicit default_vsz_limit=2G. Is this correct? -- Daniel

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Replicator bug report
by Daniel Miller 07 Dec '21

07 Dec '21

I've run dovecot-sysreport -o <core> and generated a file - but it's a few gigs in size. Am I generating the core dump incorrectly? Should I do something different? -- Daniel

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Pigeonhole v0.5.17.1 Released
by Aki Tuomi 07 Dec '21

07 Dec '21

We are happy to announce 0.5.17.1 patch release of Pigeonhole. This contains some fixes for issues found after 0.5.17 release. https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.17.1… https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.17.1… Binary packages in https://repo.dovecot.org/ Docker images in https://hub.docker.com/r/dovecot/dovecot Aki Tuomi Open-Xchange oy --- - managesieve: Dovecot failed to start if ssl_ca was too large. - lib-sieve-tool: Binaries failed to run if ssl_ca was too large.

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LDAP and user duplicated with replication
by Claudio Corvino 07 Dec '21

07 Dec '21

Hi, I have two IMAP/LMTP Dovecot server in replica (version 2.3.4.1), I use LDAP/AD for /userdb, /replica is working. When I do a search like: /doveadm replicator status '*'/ I receive user duplicated, with and without the domain part, for example: /test/ /test(a)domain.com/ but they are the same user; this lead the replicator doing twice the work of replication. I think this is related to //etc/dovecot/dovecot-ldap.conf/ that is configured in this way: /hosts = xxx/ /base = dc=xxx,dc=xxx ldap_version=3 auth_bind = yes dn = cn=xxx,cn=Users,dc=xxx,dc=xxx dnpass = xxx scope = subtree user_attrs = sAMAccountName=home=/mnt/mail-storage-lv0007/%$,=uid=501,=gid=501 pass_attrs = sAMAccountName=user user_filter = (&(objectclass=person)(samaccountname=%n)) pass_filter= (&(objectclass=person)(samaccountname=%n)) iterate_attrs = sAMAccountName=user # With following filter we exclude all objects without an email address, all computers and all inactive accounts / /iterate_filter = (&(objectCategory=person)(mail=*)(objectClass=user)(!(userAccountControl:1.2.840.113556.1.4.803:=2))) / I think that *iterate_attrs* and *iterate_filter* should be fixed, but I don't know how/./ Please could someone give me any hints? Thanks/ / Regards/ /

2 3

public folders, ACLs
by Stefan G. Weichinger 06 Dec '21

06 Dec '21

greetings ... I got the following request from a customer where we run dovecot-2.3.15 on a debian server: They have a public folder with all their project-related subfolders inside: namespace { location = maildir:/home/vmail/oeffentlich prefix = Oeffentlich/ separator = / subscriptions = yes type = public } So far we don't have the mail_plugin ACL enabled. They want to be able to create projectfolders that aren't move/delete/rename-able by the users, only by some admins. But the users should be allowed to move mails between different projectfolders etc As far as I understand we can do that with Dovecot ACLs (although I am still figuring out how to properly design them ...). My questions: * if I enable the mail_plugin for ACLs, does that in any way change the behavior of existing mailboxes? afai understand: no. Only if ACL-lists exist in the various mailboxes, these get applied, right? I don't want to break things, and I want to avoid additional complexity for the non-public user mailboxes etc Maybe I can enable the plugin only for that public namespace? * maybe someone has a link to a similar setup? thanks in advance, Stefan

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Errors after upgrade to v2.3.17
by Aurel Mihai 06 Dec '21

06 Dec '21

Hello, after upgrade to version 2.3.17, we enconter a lot of errors, such as: Dec 2 13:41:22 mail5 dovecot: lmtp(user@domain)<41944><EFw6IuKwqGHYowAAF7/xgA>: Error: lmtp-server: conn unix:pid=40487,uid=107 [22]: rcpt user@domain: stat(/home/virtual0/domain/user/.dovecot.lda-dupes/tmp) failed: Not a directory Here is my config: #dovecot -n # 2.3.17 (e2aa53df5b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.17 (054dddfa) # OS: Linux 4.19.0-18-amd64 x86_64 Debian 10.11 nfs # Hostname: auth_cache_verify_password_with_worker = yes auth_failure_delay = 5 secs auth_mechanisms = plain login auth_verbose = yes auth_worker_max_count = 256 default_client_limit = 10000 default_process_limit = 10000 default_vsz_limit = 1 G dict { lastlogin = mysql:/etc/dovecot/mysql/dovecot-dict-lastlogin.conf quotadict = mysql:/etc/dovecot/mysql/dovecot-dict-quota.conf } disable_plaintext_auth = no first_valid_uid = 100 imap_hibernate_timeout = 5 secs imap_idle_notify_interval = 3 mins log_timestamp = "%Y-%m-%d %H:%M:%S " login_log_format_elements = user=<%u> method=%m rip=%r lip=%l pid=%p %c login_trusted_networks = xxxx mail_fsync = always mail_location = maildir:/home/virtual0/%d/%u mail_nfs_index = yes mail_nfs_storage = yes mail_plugins = zlib quota mail_log notify mail_privileged_group = mail maildir_stat_dirs = 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 metric imap_command { filter = event=imap_command_finished AND tagged_reply_state=OK group_by = cmd_name } metric imap_select_no { filter = event=imap_command_finished AND cmd_name=SELECT AND tagged_reply_state=NO } metric imap_select_no_notfound { filter = event=imap_command_finished AND cmd_name=SELECT AND tagged_reply="NO*Mailbox doesn't exist:*" } metric storage_http_gets { filter = event=http_request_finished AND category=storage AND method=get } mmap_disable = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Spam { auto = subscribe autoexpunge = 30 days special_use = \Junk } mailbox Trash { auto = subscribe autoexpunge = 60 days special_use = \Trash } mailbox virtual/All { special_use = \All } prefix = } passdb { args = /etc/dovecot/mysql/dovecot-sql.conf driver = sql } plugin { last_login_dict = proxy::lastlogin last_login_key = # hidden, use -P to show it mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size quota = dict:user::proxy::quotadict quota_rule2 = Trash:ignore quota_rule3 = Spam:ignore quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 The email account that you tried to reach is over quota quota_status_success = DUNNO quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u sieve = ~/.dovecot.sieve sieve_before = /etc/dovecot/sieve/default.sieve sieve_dir = ~/sieve trash = /etc/dovecot/dovecot-trash.conf zlib_save = gz zlib_save_level = 6 } protocols = imap sieve pop3 lmtp service anvil { client_limit = 50000 unix_listener anvil-auth-penalty { mode = 00 } } service auth { client_limit = 50000 unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { group = mail mode = 0660 user = vmail } user = root vsz_limit = 1 G } service dict { unix_listener dict { mode = 0660 user = vmail } } service imap-hibernate { unix_listener imap-hibernate { group = $default_internal_group mode = 0660 } } service imap-login { inet_listener imap { address = * port = 143 } inet_listener imaps { address = * port = 993 } process_min_avail = 16 service_count = 1 } service imap { extra_groups = $default_internal_group process_min_avail = 16 unix_listener imap-master { user = $default_internal_user } vsz_limit = 2 G } service lmtp { process_min_avail = 16 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } vsz_limit = 1 G } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 16 service_count = 1 } service managesieve { vsz_limit = 1 G } service pop3-login { inet_listener pop3 { address = * port = 110 } inet_listener pop3s { address = * port = 995 } process_min_avail = 16 service_count = 1 } service pop3 { process_min_avail = 16 vsz_limit = 1 G } service quota-status { executable = /usr/lib/dovecot/quota-status -p postfix process_min_avail = 16 unix_listener /var/spool/postfix/private/quota-status { group = postfix mode = 0666 user = postfix } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { mode = 0660 user = vmail } user = vmail } service stats { unix_listener stats-reader { mode = 0660 user = vmail } unix_listener stats-writer { mode = 0666 user = vmail } } ssl_cert = </etc/dovecot/ssl/domain.pem ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_min_protocol = TLSv1 userdb { args = /etc/dovecot/mysql/dovecot-sql.conf driver = sql } protocol imap { imap_max_line_length = 64 k mail_max_userip_connections = 16 mail_plugins = zlib quota mail_log notify trash imap_quota last_login } protocol pop3 { mail_max_userip_connections = 10 mail_plugins = zlib quota mail_log notify last_login pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_fast_size_lookups = yes pop3_no_flag_updates = yes pop3_uidl_format = %08Xu%08Xv } protocol sieve { mail_max_userip_connections = 10 managesieve_max_compile_errors = 5 } protocol lda { auth_socket_path = /var/run/dovecot/auth-master mail_plugins = zlib quota mail_log notify sieve sendmail_path = /usr/lib/sendmail syslog_facility = mail } protocol lmtp { mail_plugins = zlib quota mail_log notify sieve syslog_facility = mail } Any help please? Aurel

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