May 2019 - dovecot - dovecot.org

SIGABRT on fetching mail
by Peter Nabbefeld 30 May '19

30 May '19

Good Morning, I tried using gdb, but that doesn't work for me: $ ulimit -c unlimited $ sudo systemctl restart dovecot $ sudo -E getmail getmail version 5.13 Copyright (C) 1998-2019 Charles Cazabon. Licensed under the GNU GPL version 2. SimpleIMAPSSLRetriever:peter.nabbefeld@gmx.de@imap.gmx.net:993: getmailrc: operation error (child pid 19702 killed by signal 6) 1 messages (12551 bytes) retrieved, 0 skipped $ gdb bt 19702 GNU gdb (GDB) 8.3 Copyright (C) 2019 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-pc-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"... bt: Datei oder Verzeichnis nicht gefunden. Attaching to process 19702 ptrace: Kein passender Prozess gefunden. /home/peter/NetBeansProjects/19702: Datei oder Verzeichnis nicht gefunden. (gdb) Finally, I could find a file in /var/lib/systemd/coredump: -rw-r-----+ 1 root root 710416 30. Mai 08:54 core.deliver.1003.d14b28050b8343f5a60c5998ef3947df.19702.1559199286000000.lz4 This is obviously the required dump. However, I'd not attach such a file to a post to the mailing list, so where can I put that? Send it directly to You? Kind regards Peter PS: I'm using Arch Linux - probably the hint above could be added to https://www.dovecot.org/bugreport-mail as a hint for other Arch users, as it's much easier than using gdb for those not using it?

1 0

[mail-crypt-plugin] Password Query for Folder Keys questions
by emordin 29 May '19

29 May '19

In Folder key plugin operation mode, using the following password query: password_query = SELECT \ email as user, password, \ '%w' AS userdb_mail_crypt_private_password \ FROM virtual_users WHERE email='%u'; Say I have two 'email' users...will each 'email' have a 'userdb_mail_crypt_private_password' field with a plaintext password (%w) in it? And is the 'userdb_mail_crypt_private_password' used automatically to decrypt the user private key which is stored in 'mail_attribute_dict' ? Sent with [ProtonMail](https://protonmail.com) Secure Email.

1 0

Convert Maildir to Dbox?
by David Mehler 29 May '19

29 May '19

Hello, I've got a Dovecot 2.3.x setup. Currently it's running Maildir storage. I'd like to convert that to Dbox specifically Sdbox safely. I'm also looking to at the same time or shortly thereafter encrypt the email storage with mail_crypt. Any help appreciated. Thanks. Dave.

6 8

Changes in sieve Dovecot 2.2
by Gter Marcelo 29 May '19

29 May '19

Hi People, I'm use dovecot in my mailbox system, until last month i used the dovecot version 2.0 and now i use version 2.2, version 2.2 works well for me, but i have one small problem, in sieve. In version 2.0 i had rules in sieve similiar to rule bellow: if allof (true){ keep; fileinto "INBOX"; redirect "xxxxxx"xxxxxx.com.br"; stop; } In the new version 2.2 this rules above, i have one problem duplicate messages in account from my clients, in paste INBOX, therefore, i changed rule to bellow ( with remove fileinto inbox) if allof (true){ keep; redirect "xxxxxx"xxxxxx.com.br"; stop; } Dovecot really changed your behavor, i did right to fix this ? Thanks a Lot, Marcelo

2 1

JMAP support in Dovecot
by Andrew Jones 29 May '19

29 May '19

Hi there, I understand there were discussions to try and develop JMAP support for Dovecot. Is this still in the pipeline for Dovecot 2.5? Regards Andrew Sent from my iPhone

10 18

mail_max_userip_connections
by hfh＠cndns.com 29 May '19

29 May '19

mail_max_userip_connections Can I set up an ip whitelist list, and the ip in this whitelist is unrestricted? thanks!!! hfh(a)cndns.com

2 1

Dict issue with PostgreSQL for last_login plugin (duplicate key)
by mabi 29 May '19

29 May '19

Hello, I am trying to setup the last_login plugin on Dovecot 2.3 in order to log a user's last IMAP login into a separate PostgreSQL table called last_login. I am actually following that guide: https://docs.iredmail.org/track.user.last.login.html with the exception that I use PostgreSQL instead of MySQL. So far it works at least for the very first login of a user but it looks like Dict always want to add a new record into my last_login table instead of updating the existing record for a specific user. Here is the error message from Dovecot: May 19 12:45:14-mbox1 dovecot: imap(user(a)domain.tld)<51915><if6KTzuJMZ25D+Vc>: Error: last_login_dict: Failed to write value: dict-server returned failure: sql dict: commit failed: ERROR: duplicate key value violates unique constraint "last_logins_pkey" It looks like Dict with PostgreSQL does not support UPDATEing an already existing record in the table. Or am I missing something? or it does not work with PostgreSQL? Which does not make much sense to me... Regards, Mabi

5 22

SIGABRT on fetching mail
by Peter Nabbefeld 29 May '19

29 May '19

Hello, I've never used gdb, so I don't know why I'm running into problems using "gdb bt". Usually, I'm fetching my mail using "sudo -E getmail", but this doesn't seem to work with backtrace. :-/ Output from "dovecot -n" attached. Kind regards, Peter

2 1

imap userdb Fatal setuid errors
by Steven Smith 28 May '19

28 May '19

I’m trying to configure dovecot lmtp in multi-user mode. My error logs are filled with messages saying that an imap process cannot do a setuid to another user: > May 21 22:28:46 imap(pid 17441 user myuser): Fatal: setuid(512(myuser) from userdb lookup) failed with euid=501(adminuser): Operation not permitted (This binary should probably be called with process user set to 512(myuser) instead of 501(adminuser)) I see that others have had similar issues, but I am not able to apply any of the fixes or workarounds to solve this issue (e.g. setting libexec/dovecot/imap as setuid-root). I’ve also tried other fixes like setting the permissions to 0777 on the userdb auth for postfix smtpd. According to the code (restrict-access.c, linked below), it appears that when a user authenticates, an imap worker process is launched that has the bid of the authenticator. When another user authenticates, this last process is used, but it does not have the permissions to perform a setuid to the new user, resulting in the Fatal error that appears in the logs. Is this a bug, or a configuration issue? I’ve posted my doveconf below. Any pointers would be greatly appreciated. Steve Related: https://serverfault.com/questions/930245/dovecot-operation-not-permitted <https://serverfault.com/questions/930245/dovecot-operation-not-permitted> https://dovecot.org/list/dovecot/2012-May/135549.html <https://dovecot.org/list/dovecot/2012-May/135549.html> https://trac.macports.org/ticket/58506 <https://trac.macports.org/ticket/58506> Code at https://github.com/dovecot/core/blob/master/src/lib/restrict-access.c <https://github.com/dovecot/core/blob/master/src/lib/restrict-access.c>: https://github.com/dovecot/core/blob/863887d4272f962926ab279ac4cf37855dd200… <https://github.com/dovecot/core/blob/863887d4272f962926ab279ac4cf37855dd200…> https://github.com/dovecot/core/blob/863887d4272f962926ab279ac4cf37855dd200… <https://github.com/dovecot/core/blob/863887d4272f962926ab279ac4cf37855dd200…> doveconf -n: > # 2.3.0.1 (ffd8a29): /opt/local/etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.0.1 (d33dca20) > # OS: Darwin 18.6.0 x86_64 apfs > auth_cache_size = 10 M > auth_gssapi_hostname = $ALL > auth_krb5_keytab = /opt/local/etc/dovecot/imap.keytab > auth_mechanisms = plain gssapi > auth_realms = host.domain.tld > auth_socket_path = /opt/local/var/run/dovecot/auth-userdb > auth_username_format = %Ln > debug_log_path = /opt/local/var/log/mail/mail-debug.log > default_internal_user = _dovecot > default_login_user = _dovenull > disable_plaintext_auth = no > first_valid_gid = 6 > first_valid_uid = 6 > imap_id_log = * > imap_id_send = "name" * "version" * > imap_idle_notify_interval = 29 mins > imap_urlauth_submit_user = submit > info_log_path = /opt/local/var/log/mail/mail-info.log > last_valid_gid = 100 > lda_mailbox_autocreate = yes > log_path = /opt/local/var/log/mail/mail-err.log > login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c > mail_access_groups = mail > mail_attachment_dir = /private/var/mail/tld.domain.mail/attachments > mail_attachment_fs = sis posix:mode=0666 > mail_debug = yes > mail_gid = mail > mail_home = /private/var/mail/tld.domain.mail > mail_location = mdbox:/private/var/mail/tld.domain.mail/%Ln/mdbox > mail_log_prefix = "%s(pid %p user %u): " > mail_plugins = quota zlib acl fts fts_solr fts_lucene > mail_privileged_group = mail > mail_uid = _dovecot > managesieve_notify_capability = mailto > managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext imapsieve vnd.dovecot.imapsieve > mdbox_rotate_size = 200 M > namespace inbox { > inbox = yes > location = > mailbox Archive { > auto = subscribe > special_use = \Archive > } > mailbox Drafts { > auto = subscribe > special_use = \Drafts > } > mailbox Junk { > auto = create > special_use = \Junk > } > mailbox Notspam_train { > auto = create > special_use = \Junk > } > mailbox Sent { > auto = subscribe > special_use = \Sent > } > mailbox Spam_train { > auto = create > special_use = \Junk > } > mailbox Trash { > auto = create > special_use = \Trash > } > prefix = > separator = / > } > passdb { > driver = pam > name = pam > } > plugin { > fts = solr > fts_autoindex = yes > fts_autoindex_exclude = \Junk > fts_solr = url=http://127.0.0.1:8983/solr/dovecot/ > imapsieve_mailbox1_before = file:/opt/local/etc/dovecot/sieve/report-spam.sieve > imapsieve_mailbox1_causes = COPY APPEND > imapsieve_mailbox1_name = Spam_train > imapsieve_mailbox2_before = file:/opt/local/etc/dovecot/sieve/report-ham.sieve > imapsieve_mailbox2_causes = COPY APPEND > imapsieve_mailbox2_name = Notspam_train > mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename > mail_log_fields = uid box msgid from subject size flags > quota_grace = 10%% > quota_rule = *:storage=16G > quota_rule2 = Trash:storage=+256M > quota_warning = storage=100%% quota-exceeded %u > quota_warning2 = storage=80%% quota-warning %u > recipient_delimiter = + > sieve = /private/var/mail/tld.domain.mail/rules/%Ln/dovecot.sieve > sieve_after = /opt/local/etc/dovecot/sieve-after.d > sieve_before = /opt/local/etc/dovecot/sieve-before.d > sieve_dir = /private/var/mail/tld.domain.mail/rules/%Ln/%u > sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment > sieve_pipe_bin_dir = /opt/local/etc/dovecot/sieve > sieve_plugins = sieve_imapsieve sieve_extprograms > sieve_quota_max_storage = 50M > } > postmaster_address = postmaster(a)domain.tld > protocols = imap lmtp sieve > quota_full_tempfail = yes > sendmail_path = /opt/local/sbin/sendmail > service auth-worker { > user = root > } > service auth { > extra_groups = _keytabusers > idle_kill = 15 mins > unix_listener /opt/local/var/spool/postfix/private/auth { > group = mail > mode = 0660 > user = _postfix > } > } > service imap-login { > inet_listener imap { > address = 127.0.0.1, ::1 > port = 143 > } > inet_listener imaps { > port = 993 > ssl = yes > } > process_min_avail = 6 > service_count = 0 > vsz_limit = 2 G > } > service imap { > client_limit = 16 > process_limit = 200 > process_min_avail = 6 > service_count = 0 > } > service lmtp { > unix_listener /opt/local/var/spool/postfix/private/dovecot-lmtp { > group = mail > mode = 0660 > user = _postfix > } > } > ssl = required > ssl_ca = </etc/certificates/chain.pem > ssl_cert = </etc/certificates/cert.pem > ssl_cipher_list = ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256 > ssl_dh = # hidden, use -P to show it > ssl_key = # hidden, use -P to show it > ssl_min_protocol = TLSv1.2 > ssl_prefer_server_ciphers = yes > userdb { > driver = passwd > name = passwd > } > verbose_proctitle = yes > protocol lda { > mail_fsync = optimized > mail_plugins = quota zlib acl fts fts_solr fts_lucene sieve > } > protocol imap { > mail_max_userip_connections = 50 > mail_plugins = quota zlib acl fts fts_solr fts_lucene imap_acl imap_quota imap_zlib imap_sieve > } > protocol lmtp { > mail_fsync = optimized > mail_plugins = quota zlib acl fts fts_solr fts_lucene sieve > }

2 2

ssl_dh
by ＠lbutlr 28 May '19

28 May '19

Does ssl_dh need to be manually updated each time the underlying certificate renews? -- 2+2=5 for sufficiently large values of 2.

2 1