May 2021 - dovecot - dovecot.org

disable pop3 ports?
by Dan Egli 05 May '21

05 May '21

I admit I don't quite understand dovecot's config yet, but this is driving me batty. I was looking at my server and noticed that dovecot was listening on the pop3 ports (110/TCP). Since I do not use pop3 at all, nor does anyone who has ever or ever will connect to the server, that seems like a needless waste. So I went through the config files and commented out every reference to pop3 in them. But when I restart dovecot, it STILL opens a listener on 110. How do I fix this? The ONLY external ports I want dovecot listening to are imap4 and imap4s. Thanks! -- Dan Egli From my Test Server

10 20

POP3 mailbox errors and changing permissions on folders
by John Richards 05 May '21

05 May '21

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How to Host Multiple Mail Domains (Email Hosting) in iRedMail Full Featured Linux Mail Server
by Turritopsis Dohrnii Teo En Ming 04 May '21

04 May '21

Subject: How to Host Multiple Mail Domains (Email Hosting) in iRedMail Full Featured Linux Mail Server Author: Mr. Turritopsis Dohrnii Teo En Ming (TARGETED INDIVIDUAL) Country: Singapore Date: 3rd May 2021 Monday Type of Publication: PDF Manual Document Version: 20210503.01 ***IMPORTANT NOTICE*** Please note that Turritopsis Dohrnii Teo En Ming’s guide is based on Xiao Guoan’s guide at linuxbabe.com. Reference Guide Used by Teo En Ming: How to Host Multiple Mail Domains in iRedMail with Nginx Link: https://www.linuxbabe.com/mail-server/set-up-iredmail-multiple-domains-nginx Original Author: Xiao Guoan The following is a list of open-source software that will be automatically installed and configured by iRedMail. • Postfix SMTP server • Dovecot IMAP server • Nginx web server to serve the admin panel and webmail • OpenLDAP, MySQL/MariaDB, or PostgreSQL for storing user information • Amavised-new for DKIM signing and verification • SpamAssassin for anti-spam • ClamAV for anti-virus • Roundcube webmail • SOGo groupware, providing webmail, calendar (CalDAV), contacts (CardDAV), tasks and ActiveSync services. • Fail2ban for protecting SSH • mlmmj mailing list manager • Netdata server monitoring • iRedAPD Postfix policy server for greylisting In addition, you need to add MX, A and TXT records to your ISC BIND DNS domain name server. Redundant download links for Turritopsis Dohrnii Teo En Ming's PDF manual: [1] https://www.mediafire.com/file/q6txmx0rc1cwfzw/Additional+Mail+Domains+1st+… [2] https://www.docdroid.net/Q9TRL5D/additional-mail-domains-1st-release-pdf [3] https://www.scribd.com/document/506193434/Additional-Mail-Domains-1st-Relea… [4] https://drive.google.com/file/d/10AYGt4-omBeC3vXJfzswQq0M7E09gXpG/view?usp=… [5] https://drive.google.com/file/d/113dy0AKmBYGugBueK1vS_dJwI35J6XmJ/view?usp=… [6] https://drive.google.com/file/d/1dhpYIZp31ug5hoiVNbjh6uh99s_PEx8q/view?usp=… Mr. Turritopsis Dohrnii Teo En Ming, 43 years old as of 4th May 2021, is a TARGETED INDIVIDUAL living in Singapore. He is an IT Consultant with a System Integrator (SI)/computer firm in Singapore. He is an IT enthusiast. -----BEGIN EMAIL SIGNATURE----- The Gospel for all Targeted Individuals (TIs): [The New York Times] Microwave Weapons Are Prime Suspect in Ills of U.S. Embassy Workers Link: https://www.nytimes.com/2018/09/01/science/sonic-attack-cuba-microwave.html ******************************************************************************************** Singaporean Targeted Individual Mr. Turritopsis Dohrnii Teo En Ming's Academic Qualifications as at 14 Feb 2019 and refugee seeking attempts at the United Nations Refugee Agency Bangkok (21 Mar 2017), in Taiwan (5 Aug 2019) and Australia (25 Dec 2019 to 9 Jan 2020): [1] https://tdtemcerts.wordpress.com/ [2] https://tdtemcerts.blogspot.sg/ [3] https://www.scribd.com/user/270125049/Teo-En-Ming -----END EMAIL SIGNATURE-----

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mail_crypt module and error with tmp directory
by Fiorenza Meini 04 May '21

04 May '21

Hi, I successfully enable mail_crypt module but I'm experiencing a strange behaviour with tmp directory while accessing with POP3 protocol: I see in log file: Error: istream-seekable: safe_mkstemp(/tmp/dovecot.pop3.) failed: Permission denied I changed tmp directory configuration (mail_temp_dir variable) and setting it with 777 permission, but the error is the same. On client side it's working everything, but I'd like to understand the error and if I have to be worried about it. Thank you and regards Fiorenza -- Fiorenza Meini/Spazio Web Via Dante Alighieri, 10 - 13900 - BIELLA tel. +39 015 2431982-1 - fax 015 2522600 https://esseweb.eu -- Questo messaggio e i suoi allegati ai sensi del Regolamento (UE) 2016/679 sono indirizzati esclusivamente alle persone indicate. La diffusione, copia o qualsiasi altra azione derivante dalla conoscenza di queste informazioni sono rigorosamente vietate. Qualora abbiate ricevuto questo documento per errore siete pregati di darne immediata comunicazione al mittente e provvedere alla sua distruzione.

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[Dovecot] Doveadm sometimes failed "to iterate through some users" after upgrade to 2.2
by Alessio Cecchi 04 May '21

04 May '21

Hi, I'm running every week in cron "doveadm expunge -A mailbox Spam before 30d" and monthly "doveadm quota recalc -A". After the upgrade to dovecot 2.2.12 (from 2.1.17), "doveadm -A" sometimes exit with this error: doveadm(user(a)domain.com): Error: User listing returned failure doveadm: Error: Failed to iterate through some users # echo $? 75 If I re-run the same command the user where doveadm stops changeing (always in alphabetical order): info@ mario@ pippo@ zazza@ and finally, after 3 or 4 run, ends with success. I have enable debug (via doveadm -D and auth/mail debub in 10-logging.con) but there are no errors or difference in the log when doveadm exit with the error (error code is 75). If I run # doveadm expunge -A mailbox Spam savedbefore 30d doveadm works fine Can somebody help me? Here is my configuration: # dovecot -n # 2.2.12: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.9 auth_debug = yes auth_master_user_separator = * auth_verbose = yes deliver_log_format = msgid=%m, from=%f, subject="%s": %$ dict { expire = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext sqlquota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no dotlock_use_excl = no first_valid_gid = 89 first_valid_uid = 89 imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags imap_idle_notify_interval = 29 mins imap_logout_format = in=%i out=%o session=<%{session}> last_valid_gid = 89 last_valid_uid = 89 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = * mail_debug = yes mail_fsync = always mail_location = maildir:~/Maildir mail_nfs_index = yes mail_nfs_storage = yes mail_plugins = quota expire maildir_very_dirty_syncs = yes managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave vnd.dovecot.duplicate mmap_disable = yes namespace { list = children location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u prefix = shared/%%n/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / } passdb { args = username_format=%Ld /etc/dovecot/extra/alias-domains-denylogin.txt deny = yes driver = passwd-file } passdb { args = /etc/dovecot/extra/master-users driver = passwd-file master = yes pass = yes } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { expire = Trash expire2 = Spam expire_dict = proxy::expire quota = maildir:UserQuota quota2 = dict:Quota Usage::noenforcing:proxy::sqlquota quota_grace = 10M quota_rule2 = Trash:storage=+100M quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u sieve = ~/.dovecot.sieve sieve_before = /etc/dovecot/sieve/before.sieve sieve_dir = ~/sieve sieve_extensions = +vnd.dovecot.duplicate -vacation } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s, bytes=%i/%o, session=<%{session}> protocols = imap pop3 sieve service auth-worker { process_limit = 1000 } service auth { client_limit = 5500 unix_listener auth-userdb { group = vchkpw mode = 0660 user = vpopmail } } service dict { process_limit = 300 unix_listener dict { group = vchkpw mode = 0660 user = vpopmail } } service imap-login { process_min_avail = 4 service_count = 0 } service imap { process_limit = 4000 service_count = 100 } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { service_count = 0 } service pop3 { process_limit = 1023 service_count = 100 } service quota-warning { executable = script /etc/dovecot/scripts/quota-warning.sh unix_listener quota-warning { user = vpopmail } user = vpopmail } ssl_cert = </etc/dovecot/ssl/wildcard-myemail.net.pem ssl_key = </etc/dovecot/ssl/wildcard-myemail.net.key submission_host = localhost userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lda { mail_location = maildir:~/Maildir:INDEX=MEMORY mail_plugins = quota expire sieve } protocol imap { mail_max_userip_connections = 15 mail_plugins = quota expire imap_quota } protocol sieve { mail_max_userip_connections = 2 } protocol pop3 { mail_max_userip_connections = 5 } -- Alessio Cecchi is: @ ILS -> http://www.linux.it/~alessice/ on LinkedIn -> http://www.linkedin.com/in/alessice Assistenza Sistemi GNU/Linux -> http://www.cecchi.biz Cloud Email Hosting -> http://www.qboxmail.com @ PLUG -> ex-Presidente, adesso senatore a vita, http://www.prato.linux.it

3 3

Latest git FATAL error
by Joan Moreau 03 May '21

03 May '21

Hello On latest git of dovecot, I get Apr 24 04:07:36 gjserver dovecot[857958]: imap-login: Panic: file client-common.c: line 293 (client_disconnect): assertion failed: (client->prev == NULL && client->next == NULL) and login process crash On 2.3.14, there is no problems Hope it helps JM

3 17

Problem with Log-File
by Volf, Ronald (IRV) 03 May '21

03 May '21

Hello ! We want to log error in a File directly : /var/log/IRV_MdM/Dovecot_main.log. We got this error: 'Can't open log file /var/log/IRV_MdM/Dovecot_main.log: Permission denied' Please have a look at our Problem. Is it a bug or an incorrect config ? Our Dir-Structure is: (for testing, we changed all to mod 777) 2021-05-03 04:29:32 IRV-20210501-V02-rvh:~ # dir -d /var/ /var/log/ /var/log/IRV_MdM/ /var/log/IRV_MdM/Dovecot_main.log drwxrwxrwx 11 root root 4096 2021-04-30 20:36:51 /var/ drwxrwxrwx 21 root root 4096 2021-05-03 02:53:34 /var/log/ drwxrwxrwx 4 IRV_MdM IRV_MdMG 4096 2021-05-03 04:28:09 /var/log/IRV_MdM/ -rwxrwxrwx 1 IRV_MdM IRV_MdMG 14 2021-05-03 01:36:18 /var/log/IRV_MdM/Dovecot_main.log 2021-05-03 04:29:48 IRV-20210501-V02-rvh:~ # Version: 2021-05-03 04:28:05 IRV-20210501-V02-rvh:~ # dovecot --version 2.3.14 (cee3cbc0d) 2021-05-03 04:28:12 IRV-20210501-V02-rvh:~ # Logs: 2021-05-03 04:28:51 IRV-20210501-V02-rvh:~ # doveadm log find Debug: /var/log/IRV_MdM/Dovecot_main.log Info: /var/log/IRV_MdM/Dovecot_main.log Warning: /var/log/IRV_MdM/Dovecot_main.log Error: /var/log/IRV_MdM/Dovecot_main.log Fatal: /var/log/IRV_MdM/Dovecot_main.log Config: 2021-05-03 04:45:27 IRV-20210501-V02-rvh:~ # dovecot -n # 2.3.14 (cee3cbc0d): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.14 (1b5c82b2) # OS: Linux 5.12.0-1-default x86_64 ext3 # Hostname: IRV-20210501-V02-rvh auth_cache_size = 20 M auth_debug = yes auth_debug_passwords = yes auth_verbose = yes auth_verbose_passwords = plain default_internal_user = IRV_MdM default_login_user = IRV_MdM_Login deliver_log_format = msgid=%m: %$ (From=%f, To=%t, Subject=%s, Size=%p/%w, Dsn=%{storage_id}) disable_plaintext_auth = no first_valid_uid = 10000 last_valid_gid = 49999 last_valid_uid = 49999 listen = * log_path = /var/log/IRV_MdM/Dovecot_main.log log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = Welcome to the INetS - Multi-Device-Mail-Server. mail_access_groups = IRV_MdMG mail_debug = yes mail_location = maildir:/var/spool/IRV_MdM/User/%u/Mail:CONTROL=/var/spool/IRV_MdM/User/%u/C trl:INDEX=/var/spool/IRV_MdM/User/%u/Index:LAYOUT=fs mail_temp_dir = /var/spool/IRV_MdM/Tmp 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 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh postmaster_address = <mailto:Support@IRV.at> Support(a)IRV.at ssl_cert = /Apps_IRV/Web/Cert/IRV_star_irv_at/IRV_STAR_irv_at.Crt.crt ssl_cipher_list = ALL:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH ssl_key = # hidden, use -P to show it ssl_options = no_compression ssl_prefer_server_ciphers = yes userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } verbose_proctitle = yes 2021-05-03 04:45:42 IRV-20210501-V02-rvh:~ # OS: 2021-05-03 04:45:42 IRV-20210501-V02-rvh:~ # i_ver Isg-Release: Version = 07.00.22 from 2021-01-22 21:13. Linux-Release: openSUSE Tumbleweed 20210430 Linux 5.12.0-1-default x86_64. 2021-05-03 05:13:01 IRV-20210501-V02-rvh:~ # Please send the reply to Support(a)IRV.at. Mit freundlichen Grüßen / with best regards Ing. Ronald VOLF <http://www.irv.at/> IRV Datenverarbeitung GmbH Internet: <http://www.irv.at/> www.irv.at Mail: <mailto:Sales@IRV.at> Sales(a)IRV.at Tel.: (+43-2236) 2236 7 * Fax: (+43-2236) 2191 7 / 30 Addr.: Brown Boveri Strasse 6, Top 18 2351 Wr. Neudorf, Austria

3 2

Sieve - disable redirect
by Miloslav Hůla 03 May '21

03 May '21

Hi, I would like to disallow "redirect" in sieve scripts to prevent automatical e-mail forwarding out of organisation. I'dint find a way in [1], only "sieve_extensions" option and when I try "sieve_extensions = -redirect" I got: # sievec test.sieve sievec(root): Warning: sieve: ignored unknown extension 'redirect' while configuring available extensions Is there any way? Kind regards Milo [1] https://doc.dovecot.org/configuration_manual/sieve/configuration/

1 1

setmetadata and NIL
by Steffen 03 May '21

03 May '21

Hi everybody, I played with Dovecot's metadata in dovecot-core 2:2.3.14-5+debian9 from repo deb https://repo.dovecot.org/ce-2.3-latest/debian/stretch stretch main https://tools.ietf.org/html/rfc5464#section-4.3 and https://github.com/coi-dev/coi-specs/blob/master/webpush-spec.md use NIL to remove items. Unsubscribe To unsubscribe from push notification set the previously push annotation to NIL. *Example for unsubscribing from push notifications: * C: a SETMETADATA "" (/private/vendor/vendor.dovecot/webpush/subscriptions/31754ee7-d3ee-4226-b112-6895ed26fcf8 NIL) S: a OK SETMETADATA complete and C: a SETMETADATA INBOX (/private/comment NIL) S: a OK SETMETADATA complete In the above example, the entry "/private/comment" is removed from the mailbox "INBOX". However, the metadata is stored as string NIL instead of removed: cat /home/user/Maildir/dovecot-attributes priv/369c8f17e81ff151f40400002e27b77f/vendor/vendor.dovecot/pvt/server/vendor/vendor.dovecot/webpush/subscriptions/31754ee7-d3ee-4226-b112-6895ed26fcf8 NIL priv/369c8f17e81ff151f40400002e27b77f/comment NIL shared/369c8f17e81ff151f40400002e27b77f/comment NIL a GETMETADATA (DEPTH 1) "" (/private/vendor/vendor.dovecot/webpush/subscriptions) * METADATA "" (/private/vendor/vendor.dovecot/webpush/subscriptions/31754ee7-d3ee-4226-b112-6895ed26fcf8 {3} NIL) a OK Getmetadata completed (0.001 + 0.000 secs). Do I have misinterpreted the samples? I though, the metadata is to be removed and getmetadata should not return the string NIL. Kind regards, -- Steffen

2 1

Can the disable_plaintext_auth setting get overridden for a specific port?
by Steve Dondley 03 May '21

03 May '21

In 10-auth.conf, I have "disable_plaintext_auth = yes" For port 143, I'd like to do something like this to override that setting: service imap-login { inet_listener imap { port = 143 disable_plain_text_auth = no } } Based on https://wiki.dovecot.org/LoginProcess and https://doc.dovecot.org/configuration_manual/service_configuration/ it doesn't seem like this is supported. But maybe there is another way to accomplish this?

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