July 2018 - dovecot - dovecot.org

Move away from SIS
by Riccardo Bicelli 03 Jul '18

03 Jul '18

Hello, I'm searching in docs and in archive but I can't find useful informations... Is there any way to move away from SIS? doveadm backup seems not to backup SIS attachments Thanks.

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Failing connections. Warning: Auth process not responding, delayed ..
by Robert Chalmers 03 Jul '18

03 Jul '18

can’t access mail after some upgrades. Everything else seems to be working - but dovecot seems to have caught a problem. Jul 3 09:03:35 zeus dovecot[310]: imap-login: Warning: Auth process not responding, delayed sending initial response (greeting): user=<>, rip=5.188.207.15, lip=192.168.0.15, session=<4Wk9wBNw1AAFvM8P> Jul 3 09:03:41 zeus dovecot[310]: imap-login: Warning: Auth process not responding, delayed sending initial response (greeting): user=<>, rip=127.0.0.1, lip=127.0.0.1, TLS, session=<iS2fwBNwOgB/AAAB> Jul 3 09:03:41 zeus dovecot[310]: imap-login: Warning: Auth process not responding, delayed sending initial response (greeting): user=<>, rip=127.0.0.1, lip=127.0.0.1, TLS, session=<8CagwBNwOwB/AAAB> Jul 3 09:03:41 zeus dovecot[310]: imap-login: Warning: Auth process not responding, delayed sending initial response (greeting): user=<>, rip=127.0.0.1, lip=127.0.0.1, TLS, session=<FWugwBNwPAB/AAAB> Jul 3 09:03:41 zeus dovecot[310]: imap-login: Warning: Auth process not responding, delayed sending initial response (greeting): user=<>, rip=127.0.0.1, lip=127.0.0.1, TLS, session=<aZigwBNwPQB/AAAB> Jul 3 09:03:42 zeus dovecot[310]: imap-login: Disconnected (disconnected before auth was ready, waited 17 secs): user=<>, rip=5.188.207.15, lip=192.168.0.15, session=<4Wk9wBNw1AAFvM8P> Can’t for the life of me see the problem robert$ dovecot -n # 2.2.16: /usr/local/etc/dovecot/dovecot.conf # OS: Darwin 17.6.0 x86_64 hfs auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login auth_verbose = yes auth_verbose_passwords = plain default_internal_user = _dovecot default_login_user = _dovenull mail_debug = yes mail_location = maildir:/var/mail/vhosts/%d/%n mail_max_userip_connections = 30 mail_privileged_group = mail 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 = / } passdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { args = %s driver = pam } postmaster_address = postmaster(a)quanio.net service auth-worker { user = vmail } service auth { executable = /usr/local/libexec/dovecot/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 imap-login { executable = /usr/local/libexec/dovecot/imap-login inet_listener imap { address = * port = 143 } inet_listener imaps { address = * port = 993 ssl = yes } process_limit = 128 } service imap { executable = /usr/local/libexec/dovecot/imap process_limit = 128 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = _postfix mode = 0660 user = _postfix } unix_listener lmtp { group = _postfix mode = 0600 user = _postfix } } service pop3-login { executable = /usr/local/libexec/dovecot/pop3-login inet_listener pop3 { address = * port = 110 } inet_listener pop3s { address = * port = 995 ssl = yes } process_limit = 128 } service pop3 { executable = /usr/local/libexec/dovecot/pop3 process_limit = 128 } ssl_cert = </etc/letsencrypt/live/robert-chalmers.uk/fullchain.pem ssl_cipher_list = HIGH:!LOW:!SSLv2:!EXP:!aNULL@STRENGTH ssl_key = </etc/letsencrypt/live/robert-chalmers.uk/privkey.pem ssl_prefer_server_ciphers = yes ssl_require_crl = no userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } userdb { driver = passwd } verbose_ssl = yes protocol lmtp { mail_plugins = } protocol lda { mail_plugins = " sieve" postmaster_address = postmaster(a)robert-chalmers.uk } zeus:LaunchAgents robert$ Robert Chalmers https://robert-chalmers.uk author(a)robert-chalmers.uk @R_A_Chalmers

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force-resync and replication
by Hanspeter Kunz 02 Jul '18

02 Jul '18

Hi list, I am using dovecot 2.2.27 (c0f36b0) on two servers with (dovecot) replication between them. I do not use dovecot-directors or -proxies. I just have a floating IP on the servers to do failover. I had the problem today that in one user's INBOX and one if his mailfolders got flooded with hundreds of thousands of duplicates. How this happened is another issue (of someone has an idea it would be more than welcome) for which I will start another thread. I remedied the situation by: 1. switching off dovecot on the standby-server to avoid duplicates getting replicated. 2. kicking the affected user from the master-server 3. running a doveadm force-resync on all his mailfolders (after removing the indices). Thereby I did get rid of the duplicates. (Note: doveadm deduplicate did not work because of index error) My question is now, what steps I need to take before enabling replication again (i.e. switching on the standby server), in order to avoid duplicates (if any) being replicated back to the master-server. Any hints are welcome. If you need more information I am happy to provide it, let me know. Best regards, Hp

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Re: Auto configure email clients from Dovecot?
by Davide Marchi 01 Jul '18

01 Jul '18

[..] > Eduardo M KALINOWSKI: > It is possible but it's not a dovecot job. Ak, ok! > Thunderbird has a protocol to get the settings but is DNS/xml related ( > and is pretty normal because it not know the name of the mail server > before ) > https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Autoconfigurat… > You need to serve an xml file on your webserver on the same domain. > MfG Robert Schetterer: > see > https://automx.org/en/ > https://blog.sys4.de/outlook-2013-special-use-mit-dovecot-de.html > https://wiki.dovecot.org/MailboxSettings Perfect! Many thanks to all! Davide

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permissions of newly created mailboxes only with dovecot-lda and posix acls
by Alexander 'Leo' Bergolth 01 Jul '18

01 Jul '18

Hi! I am experiencing troubles concerning the inheritance of the setgid bit if a new mailbox is created with dovecot-lda. If it is created with dovecot/imap, everything works fine. dovecot-lda is called from postfix like this: ---------- mailbox_command = /usr/local/sbin/postfix-lda.sh ---------- logger -p mail.info -t postfix-lda "H: $HOME, S: $SENDER, R: $RECIPIENT, U: $(umask), id: $(/bin/id); $@" dovecot-lda -f "$SENDER" -a "$RECIPIENT" -onamespace/inbox/location=maildir:~/Maildir:LAYOUT=fs:FULLDIRNAME=__MAILBOX__ ---------- If a mailbox is created with dovecot-lda (sieve), permissions look like that: $ ls -ld Maildir Maildir/2018-q3 Maildir/2018-q3/__MAILBOX__ drwxrws---+ 49 leo leo 4096 Jul 1 09:53 Maildir drwxrwx---+ 3 leo leo 24 Jul 1 09:40 Maildir/2018-q3 drwxrwx---+ 2 leo staff 6 Jul 1 09:40 Maildir/2018-q3/__MAILBOX__ -> The setguid bit of Maildir is not honored and dovecot complains: Jul 1 09:40:42 strike postfix-lda: H: /home/leo, S: testerl(a)strike.wu.ac.at, R: leo(a)strike.wu.ac.at, umask: 0077, id: uid=500(leo) gid=500(staff) groups=500(staff); Jul 1 09:40:42 strike dovecot: lda(leo): Error: fchown(/home/leo/Maildir/2018-q3/__MAILBOX__/cur, group=501(leo)) failed: Operation not permitted (egid=500(staff), group based on /home/leo/Maildir/2018-q3 - see http://wiki2.dovecot.org/Errors/ChgrpNoPerm) Jul 1 09:40:42 strike dovecot: lda(leo): Error: mkdir(/home/leo/Maildir/2018-q3/__MAILBOX__/cur) failed: Operation not permitted Jul 1 09:40:42 strike dovecot: lda(leo): Error: sieve: msgid=<20180701074042.1B1241CFB78(a)strike.wu.ac.at>: failed to store into mailbox '2018-q3': Internal error occurred. Refer to server log for more information. [2018-07-01 09:40:42] If I create a mailbox with imap, everything works as expected: $ ls -ld Maildir/permtest Maildir/permtest/__MAILBOX__ drwxrws---+ 3 leo leo 24 Jul 1 09:51 Maildir/permtest drwxrws---+ 5 leo leo 108 Jul 1 09:51 Maildir/permtest/__MAILBOX__ mkdir from a shell also works fine. The problem seems to be connected to the Posix ACLs that are set on Maildir: $ getfacl Maildir # file: Maildir # owner: leo # group: leo # flags: -s- user::rwx user:bergolth:rwx group::rwx mask::rwx other::--- default:user::rwx default:user:bergolth:rwx default:group::rwx default:mask::rwx default:other::--x If I remove all Posix ACLs using setfacl -b Maildir, creation of new mailboxes works fine also with dovecot-lda. Why is dovecot-lda behaving differently if Posix-ACLs are set on Maildir? Any why isn't dovecot imap affected? Any help would be greatly appreciated, I am actually clueless! Cheers, --leo dovecot-2.2.32-1leo.el7.centos.x86_64 dovecot-pigeonhole-2.2.32-1leo.el7.centos.x86_64 postfix-2.10.1-6.el7.x86_64 # uname -r 4.4.138-1.el7.elrepo.x86_64 -- e-mail ::: Leo.Bergolth (at) wu.ac.at fax ::: +43-1-31336-906050 location ::: IT-Services | Vienna University of Economics | Austria

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