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Mail messages are occasionally getting "stuck" behind one message on the server with POP3
by David Salisbury 24 Sep '19

24 Sep '19

I'm currently using Dovecot 2.2.33.2, although I've had this particular issue happen periodically over the last few years with other Dovecot versions. It seems to only affect accounts I'm receiving with POP3, not IMAP ones. What happens is the "top-most" (or, oldest) message in the "cur" folder seems to get "stuck". So I'll, say, come back in after a break to check my email (Thunderbird in my case, latest version), and in one of my folders I'll have 30 copies of the same email (all with the same timestamp), and no newer messages delivered since the timestamp of that message. If I go look in the "cur" folder, it has lots of messages in it. The "new" folder is empty. Every time I click "Get Messages" in the mail client, I get another new copy of the same email and no other mail. If I go manually into the cur folder and move the top-most (again, meaning "oldest") message out (which of course corresponds to the message that I'm receiving copies of over-and-over repeatedly) then when I click "Get Messages" all of the other messages come pouring into my mail client just fine and everything becomes "un-stuck". I've done some experiments, and if I copy that same "bad" message back in to cur with its original filename, it gets stuck again. It is an encrypted message, so I tried decrypting it and putting it back in cur with the original name, and it gets stuck in the same fashion even when it is decrypted. I tried putting the bad message into an account that receives with IMAP, just to see if it would maybe keep messages from delivering or something, but new messages come into the IMAP account just fine, even with the bad message present, so the issue seems specific to POP3. Any ideas what might cause something like that? I've had it happen twice over the last two days (which is unusually frequent, hence my message here), and the message sources are varied. Today it was a normal email message from a person, and yesterday it was a Twitch notification. I don't see anything unusual in the logs (and I did turn on debugging to see if it gave some additional info), just normal POP3 logins and connections closings when I'm clicking "Get Messages". -David

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Any need to be worried about occasional dsync errors ?
by Laura Smith 24 Sep '19

24 Sep '19

I am occasionally (maybe every 4 hours or less frequently) seeing the following two errors appear in my logs. Are they any cause for concern ? Error: Timeout during state=sync_mails (send=done recv=mails) I/O has stalled, no activity for 600 seconds (last sent=mail_request (EOL)

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Quota plug-in, do the directors also need it enabled?
by Kristijan Savic - ratiokontakt GmbH 23 Sep '19

23 Sep '19

I am having an issue with the quota display not showing up in e.g. Roundcube. There are multiple Dovecot servers and three directors. A load balancer also does it's thing. The quota plug-in is enabled everywhere, except on the directors. Do those also need it enabled? -- Kristijan Savic

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pigeonhole sieve "standalone"
by Greg Minshall 22 Sep '19

22 Sep '19

hi. i've been thinking (but, for years now!) of a replacement for procmail, and pigeonhold sieve seems like a good candidate. but, i run nmh, not dovecot. as i started install it (on arch linux), i started to worry that it may be foolish of me to try to run it outside of a dovecot system. any wisdom about that would be gratefully received. thanks in advance, and thanks for the software. Greg Minshall

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mdbox + sis attachments. Error stream is larger than expected by 1 byte
by Oleg Krivonosov 20 Sep '19

20 Sep '19

Hello! I use Dovecot 2.3.4.1-5+deb10u1 (Debian 10 x64) with mdbox, sis and imap. I catch many errors with attachments "Stream is larger than expected" by 1 byte in emails from Xerox WorkCentre 3345. Examples: Sep 20 23:20:04 mailserver dovecot: imap(wasya)<606><AG1zywGTVodVrE84>: Error: Mailbox INBOX: UID=5002: read(attachments-connector(/var/mail/virtual/wasya/mdbox/storage/m.210)) failed: read(/var/mail/attachments/b3/56/b3563977baf186928d38f81480b6443cf6d6d7e4-b86d80062ab36f5d7f190000f7ccf497[base64:18 b/l]) failed: Stream is larger than expected (882801 > 882800, eof=0) (FETCH BODY[]) Sep 20 23:32:27 mailserver dovecot: imap(wasya)<4831><n0a39wGTZ8hVyu8l>: Error: Mailbox INBOX: UID=654996: read(attachments-connector(/var/mail/virtual/wasya/mdbox/storage/m.4372)) failed: read(/var/mail/virtual/wasya/mdbox/storage/m.4372 trailer) failed: Stream is larger than expected (38 > 37, eof=0) (FETCH BODY[]). This error breaks getting email in MS Outlook and breaks viewing attachment in the problem email. Please help me to debug and to fix this issue. -- Best regards Oleg

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Re: Bug] Sieve vacation :addresses match only,>, case-sensitive?
by Klaus Steinberger 20 Sep '19

20 Sep '19

Hi, >> I never saw any mail system in which the local Part ist Case sensitive! > > Every Unix/Linux system (I?d say that represents the majority of mail systems) has a case sensitive local part. Most mail admins have set their systems up to normalize all users on lowercase names, but that is not and has not always been the case. at least in every large installation LDAP User Backend's (or AD or similar) are used, and they are definitly case insensitive for the CN or UID attributes. Really nobody who cares about his systems and users uses mailboxnames which just differ in case (too much danger of confusion!) At least sieve must reflect the same settings as the MDA, so if the MDA is set to downcase (which in my opionion is the only valuable setting) sieve must also downcase. Sincerly, Klaus

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fts_solr: Error: fts_solr: received invalid uid '0'
by Fabian 20 Sep '19

20 Sep '19

Hi, we are trying to add full text search functionality with Solr to our Doveoct setup. Our Versions: OS: Debian 9 Tried versions: - Dovecot 2.2.7 with Solr 3.6 - Dovecot 2.3.4 with Solr 8.2 (2.2.7 from offical Debian repository, 2.3.4 from backports) Search is working mostly of the time perfrectly smooth. But sometimes following message appears in mail.err: dovecot: imap(username)<16189><UxYWLVuSYMasEQoK>: Error: fts_solr: received invalid uid '0' If this error occurs our webmail frontend delivers most of the time a timeout. Sometimes the search only takes really long. Are there any ideas why this error occurs? We are not able to reproduce the error in such a way that it would always be reproducible. However, we can reproduce the behavior in some form over and over again - but we do not know exactly what is decisive. If you need any further information please ask - thanks! :-) dovecont -n: 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () # OS: Linux 4.9.0-11-amd64 x86_64 Debian 9.11 ext4 # Hostname: localhost auth_master_user_separator = * auth_username_format = %Ln default_client_limit = 5000 default_process_limit = 1000 default_vsz_limit = 256M dict { sqlquota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no first_valid_uid = 480 imap_capability = +XDOVECOT lmtp_save_to_detail_mailbox = yes mail_attribute_dict = file:/var/spool/dovecot/user/%n/Maildir/dovecot-attributes mail_gid = vmail mail_location = maildir:/var/spool/dovecot/user/%d/%n/Maildir:LAYOUT=fs mail_plugins = " listescape mail_log notify quota acl fts fts_solr virtual" mail_privileged_group = vmail mail_uid = vmail 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 { hidden = yes inbox = yes list = no location = prefix = separator = / subscriptions = yes } namespace { list = yes location = maildir:%%h/Maildir:INDEXPVT=~/shared/%%u:LAYOUT=fs prefix = shared/%%n/ separator = / subscriptions = no type = shared } namespace Public { list = children location = maildir:/var/spool/dovecot/public:INDEXPVT=~/public:LAYOUT=fs prefix = Public/ separator = / subscriptions = no type = public } namespace Virtual { hidden = no list = yes location = virtual:/etc/dovecot/virtual:INDEX=/var/spool/dovecot/user/%u/virtual prefix = Virtual/ separator = / subscriptions = no } namespace inbox { inbox = no 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 = INBOX/ separator = / subscriptions = no type = private } passdb { args = /etc/dovecot/masteruser.%s driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } passdb { args = scheme=CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } plugin { acl = vfile acl_anyone = allow acl_shared_dict = file:/var/spool/dovecot/public/shared-mailboxes.db fts = solr fts_autoindex = yes fts_solr = url=<a href="http://172.17.10.12:8983/solr/dovecot/" rel="noreferrer noopener" target="_blank">172.17.10.12:8983/solr/dovecot/</a> quota = dict:User quota::no-unset:proxy::sqlquota quota_rule = *:storage=10G sieve = file:~/sieve;active=~/.dovecot.sieve sieve_before = /var/spool/dovecot/globalsieve/duplicate.sieve sieve_duplicate_default_period = 1h sieve_duplicate_max_period = 1d } protocols = " imap lmtp sieve pop3" service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service decode2text { executable = script /usr/lib/dovecot/<a href="http://decode2text.sh" rel="noreferrer noopener" target="_blank">decode2text.sh</a> unix_listener decode2text { mode = 0666 } user = dovecot } service dict { unix_listener dict { group = vmail user = vmail } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } ssl = no userdb { args = /etc/dovecot/mysql-userdb.conf.ext driver = sql } protocol lmtp { mail_plugins = " listescape mail_log notify quota acl fts fts_solr virtual acl quota sieve notify" quota_full_tempfail = yes } protocol imap { imap_capability = +XDOVECOT mail_max_userip_connections = 100 mail_plugins = " listescape mail_log notify quota acl fts fts_solr virtual imap_acl imap_quota" } remote <a href="http://172.17.10.10" rel="noreferrer noopener" target="_blank">172.17.10.10</a> { protocol imap { imap_metadata = yes } }

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Second private namespace
by André Rodier 19 Sep '19

19 Sep '19

Hello, I have Dovecot working, with a private namespace only. I would like to know if the following is feasible. - Add a second private namespace, in another directory scheme, for instance /mnt/backup/homebox/<user>/Mails/... - This namespace would be read-only. Perhaps the index and flags should be stored in a different folder with r/w access (e.g. /var, or even /tmp, it's not important) Now, as a matter of fact, this folder would be mounted on demand, via systemd-automount and fuse and is likely to be remote. This might implies some flags or caching on Dovecot performance. Thanks for your insights, André

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Recent Dovecot on old operating system
by geho781＠justmail.de 19 Sep '19

19 Sep '19

Hi, sorry for the dumb question and please ignore this post if you think it's far beyond; i know it's not the way to go, but for reasons ... Has anyone running a self compiled recent dovecot (2.2.36.4) on Debian-7 and does it work? Or thinks it should work. Surprisingly it actually compiles flawlessly on Debian-7, but i wonder wether it will become a complete mess replacingthe existing dovecot (2.1.7) with the new one, serving a few dozens users and any kind of mail clients. Libraries of the compiled Dovecot: $ ldd ./src/master/.libs/dovecot linux-vdso.so.1 => (0x00007ffeacfb1000) libdovecot.so.0 => /usr/local/00-DBAI/dovecot/lib/dovecot/libdovecot.so.0 (0x00007f557b2a9000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f557af1c000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f557ad18000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f557ab10000) /lib64/ld-linux-x86-64.so.2 (0x00007f557b5dc000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f557a8f4000) libc6 versions: Debian-7: 2.13-38 Debian-9: 2.24-11 thanks so far, gerald

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Dovecot 2.3.7.2 lucene segfault and coredump
by Domenico Pastore 19 Sep '19

19 Sep '19

Hi, i have a problem with libclucene-core.so.2.3.3.4. I See segfault error to messages log, when dovecot store mail to INBOX. set 12 13:41:21 box02.par-tec.it kernel: doveadm-server[20285]: segfault at 38 ip 00007f575b68fc42 sp 00007ffc0272e750 error 4 in libclucene-core.so.2.3.3.4[7f575b569000+188000] set 12 13:41:22 box02.par-tec.it kernel: doveadm-server[18871]: segfault at 38 ip 00007f9bea6d2c42 sp 00007fff47bceae0 error 4 in libclucene-core.so.2.3.3.4[7f9bea5ac000+188000] In the dovecot logs: 2019-09-12 13:45:09 auth: Debug: ldap(test4444client(a)newsvilXXXX,10.0.8.128<mailto:test4444client@newsvilXXXX,10.0.8.128>): Finished userdb lookup 2019-09-12 13:45:09 auth: Debug: userdb out: USER 1 test4444client@newsvilXXXX home=/pec_store/pec_mailbox/pec_mailbox_devel01/4/5/6/7/1/45671_18231 quota_rule=*:bytes=1048576000 mail_plugins+= 2019-09-12 13:45:10 SKENO8Uvel0gbAAA5ZKy4w doveadm(test4444client@newsvilXXXX): Fatal: master: service(doveadm): child 27680 killed with signal 11 (core dumped) 2019-09-12 13:45:10 auth: Debug: master in: USER 1 test4444client@newsvilXXXX service=doveadm lip=192.160.10.3 lport=924 rip=10.0.8.128 rport=36760 2019-09-12 13:45:10 auth: Debug: ldap(test4444client@newsvilXXXX 10.0.8.128): Performing userdb lookup I have attach the coredump of error and dovecot.conf Thanks for support. Br, Domenico ------------------- info: ------------------- # 2.3.7.2 (3c910f64b): /pec/config/dovecot/dovecot-devel01/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 3.10.0-957.27.2.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) # Hostname: box02

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