- dovecot - dovecot.org

Is the mdbox format backwards compatible?
by Orion Poplawski 12 Dec '14

12 Dec '14

I'm contemplating using dsync with dovecot-2.2.10 (el7) and then transferring the resulting mdbox files to a dovecot-2.0.9 (el6) server. Is the mdbox format backwards compatible between the two versions? Thanks, Orion -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion(a)nwra.com Boulder, CO 80301 http://www.nwra.com

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stacking istreams and ostreams
by Philipp Brüll 12 Dec '14

12 Dec '14

Hello, I'm developing an encryption plugin for dovecot and ran into a problem with the stacking of i/o-streams. The encryption i/o-streams are working fine on any kind of mail the test suite is passing through them. But as soon as the zlib plugin is enabled the logs show an cache error: failed: Cached message size larger than expected (214 > 206, box=INBOX, UID=1) I've already double-checked the return values of ostream's sendv and istream's read function. They seem correct (and equal). If the order of the streams are changed (by changing the number in the lib-filename libxx_scrambler.so); meaning that the encryption is done before the compression (which isn't efficient) both streams are working correct without any errors. Is there some way the zlib plugin changes the cached message size? Is there some behaviour of the zlib plugin that I'm missing? Any help would be very welcome. Best regards, Philipp -- simia.tech GbR http://simiatech.com

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[Dovecot] Doveadm sometimes failed "to iterate through some users" after upgrade to 2.2
by David Davidov 12 Dec '14

12 Dec '14

> Yes, after an upgrade works fine. Hello, Unfortunately this issue hits again. I installed the latest stable version 2.2.15 and got the following error # doveadm expunge -u "^o^(a)dave.s484.qa-team.net" mailbox 'INBOX.Junk Mail' SAVEDBEFORE 7d doveadm(^o^(a)dave.s484.qa-team.net): Error: userdb lookup(^o^(a)dave.s484.qa-team.net): Disconnected unexpectedly doveadm(^o^(a)dave.s484.qa-team.net): Fatal: User lookup failed: Internal error occurred. Refer to server log for more information. # echo $? 75 Our production servers run 2.2.13, where the situation is the same. regards, David Davidov System administrator @ icdsoft.com -- David Davidov | System Administrator | ICDSoft Ltd.

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Dsync issues between Cyrus and Dovecot
by Ovidiu Moldovan 12 Dec '14

12 Dec '14

Hello, I have some issues related with dsync when trying to perform two way synchronization between Cyrus and Dovecot. 1st time synchronization always works and email, folders, flags can be synced between these but once for example in dovecot side the user creates a folder, dsync fails with the following errors: Debug: brain M: Other brain should change mailbox INBOX/dove GUID c77e7711be9a6c77fc845ea745963ddb -> df0d180f71e38a544f9e00008aa015be Debug: brain M: out state=master_send_mailbox changed=1 Debug: brain S: in state=recv_mailbox_tree_deletes Error: Can't create mailbox INBOX/dove: Mailbox already exists INBOX/dove folder was created in Dovecot side and does not exist in Cyrus side. I have tried full sync or backup but without any luck. If I delete the folder from Dovecot side the sync works fine again. I can post more info on the configuration if needed. Thank you, Ova

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R: Re: R: Re: Duplicate messages
by absolutely_free＠libero.it 12 Dec '14

12 Dec '14

Hi, I mounted both network storage on this server. After that, I used: # nice -n 19 rsync -av --progress /mnt/old/domains/* /var/spool/pop/domains/ >----Messaggio originale---- >Da: skdovecot(a)smail.inf.fh-brs.de >Data: 12/12/2014 12.01 >A: "absolutely_free(a)libero.it"<absolutely_free(a)libero.it> >Cc: <dovecot(a)dovecot.org> >Ogg: Re: R: Re: Duplicate messages > >-----BEGIN PGP SIGNED MESSAGE----- >Hash: SHA1 > >On Fri, 12 Dec 2014, absolutely_free(a)libero.it wrote: > >> with rsync > >would you be more specific: > >which command line, how did you shut users out etc.pp. > >> >>> ----Messaggio originale---- >>> Da: skdovecot(a)smail.inf.fh-brs.de >>> Data: 12/12/2014 9.44 >>> A: "absolutely_free(a)libero.it"<absolutely_free(a)libero.it> >>> Cc: <dovecot(a)dovecot.org> >>> Ogg: Re: Duplicate messages >>> >>> -----BEGIN PGP SIGNED MESSAGE----- >>> Hash: SHA1 >>> >>> On Fri, 12 Dec 2014, absolutely_free(a)libero.it wrote: >>>> >>>> Hi, >>>> I just moved mail spool to a different network storage. >>>> Now, several users are complaining about duplicate message that are fetched >> by their clients (Outlook, Microsoft Outlook). >>>> What is the reason? >>> >>> How did you moved the message to the other network storage? >>> >>>> mail_location = maildir:/coraid-s2l2/domains >>> >>> - -- >>> Steffen Kaiser >>> -----BEGIN PGP SIGNATURE----- >>> Version: GnuPG v1.4.11 (GNU/Linux) >>> >>> iQEVAwUBVIqq2Xz1H7kL/d9rAQJqJgf/ZYLDY6IwdTcSUFXRdFlvyv37QW/R0fm0 >>> Ki8izVuOHRNK2/YEubN2+TVouOD7X3COkYa8RCu8XSoWRiFKSl0PMHNsVqUIocA1 >>> fEQOnY54nmdERsZ/+w8xLW5UZ2jKH12X3gqjMSFXUvMbvlhOCZFgvlckCx/DStC+ >>> yjCM5yoOR711KXrhEzikr1lmxyR+kikh1N+MTLNkC3uQp0vFmWJR3HoXd3x+p+Dv >>> y0PkOZmna+B8a1ElGDYA8SyGVvVl2VT+YzGt7IPhZPB5j/CrW2Kcwm2j9OW0IWnE >>> rPuhY/5xqZoSUuGBGNXeA6bLy0gidnnZO7NpkMJgZcP6OnK612tMgw== >>> =qlBd >>> -----END PGP SIGNATURE----- >>> >> > >- -- >Steffen Kaiser >-----BEGIN PGP SIGNATURE----- >Version: GnuPG v1.4.11 (GNU/Linux) > >iQEVAwUBVIrK9Xz1H7kL/d9rAQL6BQgAjKW48XJ21iPtZ+fTZgxEC00uA7cjvwZM >EYV9wThONbvP6zCLsbjKPOCiWX4f9NwHobgkkTIBtGogF0obNvUY2tiIRWRzwGO0 >31M/53iJ7ORNy9IZg3u5r1NPcklXhsjuy4cWyj13jN2FhY2xHJGqJWujtM5dCAe0 >Qq3KDH0yvJQSMJIMF2Eb4M59xD6hvXMR7qSH3ShI8DxUa0JSg7hlSTKM4Ak54dPb >GObJBiAqR9TUJ5lBFvoxmt2EyAnl4h0YURdwfuCyv+vYkP0GVat5p9hHRUPDc3cU >k4MrgdcVDJI5+VMzKOhcovEZ3o2k5ChGXIdzHjvp79VB1VyZsvViyQ== >=QeMJ >-----END PGP SIGNATURE----- >

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PATCH - add username_format to the PAM auth module
by Bradley Kite 12 Dec '14

12 Dec '14

Hi there, Other auth modules (eg passwd-file) allow a username_format to be specified, but not the PAM module. The use-case, is where I want a static userdb configuration which takes the domain into account but still want to use PAM for authentication, eg: userdb { driver = static args = uid=8 gid=12 home=/mnt/storage/mail/vhosts/%d/%n } passdb { driver = pam args = username_format=%n allow_pam_transform=no dovecot } The global "auth_username_format" setting ends up changing the username, so looses the ability to have different mailboxes based on domain. There is also a new setting, allow_pam_transform which stops the username being changed after a successful authentication. Normally, if PAM changes the username, then dovecot must update its record of the username for further processing - but in this use case we must disable this function. -- Brad.

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R: Re: Duplicate messages
by absolutely_free＠libero.it 12 Dec '14

12 Dec '14

Hi Steffen, with rsync Thank you >----Messaggio originale---- >Da: skdovecot(a)smail.inf.fh-brs.de >Data: 12/12/2014 9.44 >A: "absolutely_free(a)libero.it"<absolutely_free(a)libero.it> >Cc: <dovecot(a)dovecot.org> >Ogg: Re: Duplicate messages > >-----BEGIN PGP SIGNED MESSAGE----- >Hash: SHA1 > >On Fri, 12 Dec 2014, absolutely_free(a)libero.it wrote: >> >> Hi, >> I just moved mail spool to a different network storage. >> Now, several users are complaining about duplicate message that are fetched by their clients (Outlook, Microsoft Outlook). >> What is the reason? > >How did you moved the message to the other network storage? > >> mail_location = maildir:/coraid-s2l2/domains > >- -- >Steffen Kaiser >-----BEGIN PGP SIGNATURE----- >Version: GnuPG v1.4.11 (GNU/Linux) > >iQEVAwUBVIqq2Xz1H7kL/d9rAQJqJgf/ZYLDY6IwdTcSUFXRdFlvyv37QW/R0fm0 >Ki8izVuOHRNK2/YEubN2+TVouOD7X3COkYa8RCu8XSoWRiFKSl0PMHNsVqUIocA1 >fEQOnY54nmdERsZ/+w8xLW5UZ2jKH12X3gqjMSFXUvMbvlhOCZFgvlckCx/DStC+ >yjCM5yoOR711KXrhEzikr1lmxyR+kikh1N+MTLNkC3uQp0vFmWJR3HoXd3x+p+Dv >y0PkOZmna+B8a1ElGDYA8SyGVvVl2VT+YzGt7IPhZPB5j/CrW2Kcwm2j9OW0IWnE >rPuhY/5xqZoSUuGBGNXeA6bLy0gidnnZO7NpkMJgZcP6OnK612tMgw== >=qlBd >-----END PGP SIGNATURE----- >

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Error: mremap_anon(###) failed: Cannot allocate memory
by Andy Dills 12 Dec '14

12 Dec '14

We're running dovecot 2.2.15 with pigeonhole 0.4.6, in a clustered environment, nfs with proxy and backend on all servers. I've been seeing some odd errors from lmtp: Error: mremap_anon(127930368) failed: Cannot allocate memory It seems to affect specific users, but it doesn't seem to manifest in any particular way; no user complaints. Just the occasional log message. I would guess this is a bug? I'm open to suggestions and I'd be happy to post config if somebody has an idea. Thanks, Andy --- Andy Dills Xecunet, Inc. www.xecu.net 301-682-9972 ---

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LMTP BUG
by Peter Hodur 12 Dec '14

12 Dec '14

Hello, just setting up mail hub with Postfix & Dovecot I have found BUG in LMTP implementation. * assumptions - latest stable Postix & Dovecot, - Postfix delivers via Dovecot LMTP (virtual_transport = lmtp:127.0.0.1:24), - Dovecot userdb & passwd lookups are made via custom checkpassword interface, - each user (email account) has different UID/GID * description LMTP process must run as root to be able to deliver msgs to each user. It drops privileges temporarily when delivering and then restoring effective UID/GID to root (saved one). The problem is, when an attempt with more than ONE recipients is made. More than one recipient within single session. It seems, that Dovecot LMTP restores root privileges not between each recipient delivery attempt but after whole transaction. The only solution is throttle Postfix to send single message with multiple recipients as many small transactions - all with only ONE rcpt. lmtp_destination_recipient_limit=1 makes this magic. Otherwise you can find: Dec 12 03:30:36 vm dovecot: lmtp(3580, info(a)xxx.com) Fatal: setgid(48672 from userdb lookup) failed with euid=33001, gid=43570, egid=43570: Operation not permitted (This binary should probably be called with process group set to 4867 2 instead of 43570) Can someone confirm that this is an error/bug? Thanks Pete

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[Corrected] Can't get shared public folders working
by Randall Gellens 12 Dec '14

12 Dec '14

I'm trying to use a shared public namespace. My mail client says it exists, and I can telnet in and SELECT it, but sieve scripts can't write to it. The configuration in /etc/dovecot/conf.d/10-mail.conf: # Shared namespace for Foo stuff namespace { type = public separator = '/' prefix = "#Foo/" location = maildir:/local/mnt/mail/shared:INDEXPVT=/local/mnt/mail/%n/shared:LAYOUT=fs # Use the default namespace for saving subscriptions. #subscriptions = no # List the shared/ namespace only if there are visible shared mailboxes. #list = children } I created the location, owned by the vmail user: $ ls -ld /local/mnt/mail/shared drwxr-xr-x 4 vmail vmail 4096 Dec 11 12:38 /local/mnt/mail/shared I created the subfolders, verified that they are there. Also, I see that Dovecot created a dovecot.mailbox.log file: $ ls -l /local/mnt/mail/shared total 12 -rw-r--r-- 1 vmail vmail 96 Dec 11 12:38 dovecot.mailbox.log drwxr-xr-x 3 vmail vmail 4096 Dec 11 12:37 Foo-Bugs drwxr-xr-x 3 vmail vmail 4096 Dec 11 12:38 Foo-Patches The dovecot.mailbox.log file is empty: $ more /local/mnt/mail/shared/dovecot.mailbox.log The intermediate folder is empty: $ ls -l /local/mnt/mail/shared/Foo-Bugs/ total 4 drwxr-xr-x 5 vmail vmail 4096 Dec 11 12:36 Foo-Bugs-New The mailbox has some folders in it: $ ls -l /local/mnt/mail/shared/Foo-Bugs/Foo-Bugs-New/ total 12 drwxr-xr-x 2 vmail vmail 4096 Dec 11 12:36 cur drwxr-xr-x 2 vmail vmail 4096 Dec 11 12:36 new drwxr-xr-x 2 vmail vmail 4096 Dec 11 12:36 tmp They seem to be empty: $ ls -l /local/mnt/mail/shared/Foo-Bugs/Foo-Bugs-New/* /local/mnt/mail/shared/Foo-Bugs/Foo-Bugs-New/cur: The Sieve log insists the mailbox doesn't exist: $ more /local/mnt/home/Foo-bugs/.dovecot.sieve.log sieve: info: started log at Dec 11 15:35:20. error: msgid=<p06240614d0afdab4a086(a)[99.111.97.136]>: failed to store into mailbox '#Foo/Foo-Bugs/Foo-Bugs-New': Mailbox doesn't exist: #Foo/Foo-Bugs/Foo-Bugs-New. info: msgid=<p06240614d0afdab4a086(a)[99.111.97.136]>: stored mail into mailbox 'INBOX'. But if I telnet into the server, the mailbox shows up: a1 list "" * * LIST (\HasNoChildren \Junk) "/" Junk * LIST (\Noselect \HasChildren) "/" #Foo * LIST (\Noselect \HasChildren) "/" #Foo/Foo-Patches * LIST (\HasNoChildren) "/" #Foo/Foo-Patches/Foo-Patches-New * LIST (\Noselect \HasChildren) "/" #Foo/Foo-Bugs * LIST (\HasNoChildren) "/" #Foo/Foo-Bugs/Foo-Bugs-New * LIST (\HasNoChildren) "/" INBOX a1 OK List completed. And I can SELECT it: a2 select "#Foo/Foo-Bugs/Foo-Bugs-New" * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 0 EXISTS * 0 RECENT * OK [UIDVALIDITY 1418343553] UIDs valid * OK [UIDNEXT 1] Predicted next UID * OK [NOMODSEQ] No permanent modsequences a2 OK [READ-WRITE] Select completed (0.006 secs). So why can't the Sieve script store into it? -- Randall Gellens Opinions are personal; facts are suspect; I speak for myself only -------------- Randomly selected tag: --------------- I must have a prodigious quantity of mind; it takes me as much as a week sometimes to make it up. --Mark Twain, _The Innocents Abroad_

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Can't get shared public folders working
by Randall Gellens 12 Dec '14

12 Dec '14

I'm trying to use a shared public namespace. Clients say it exists, but sieve scripts can't write to it. The configuration in /etc/dovecot/conf.d/10-mail.conf: # Shared namespace for Foo stuff namespace { type = public separator = '/' prefix = "#Foo/" location = maildir:/local/mnt/mail/shared:INDEXPVT=/local/mnt/mail/%n/shared:LAYOUT=fs # Use the default namespace for saving subscriptions. #subscriptions = no # List the shared/ namespace only if there are visible shared mailboxes. #list = children } I created the location, owned by the vmail user: $ ls -ld /local/mnt/mail/shared drwxr-xr-x 4 vmail vmail 4096 Dec 11 12:38 /local/mnt/mail/shared I created the subfolders, verified that they are there. Also, I see that Dovecot created a dovecot.mailbox.log file: $ ls -l /local/mnt/mail/shared total 12 -rw-r--r-- 1 vmail vmail 96 Dec 11 12:38 dovecot.mailbox.log drwxr-xr-x 3 vmail vmail 4096 Dec 11 12:37 Foo-Bugs drwxr-xr-x 3 vmail vmail 4096 Dec 11 12:38 Foo-Patches The dovecot.mailbox.log file is empty: $ more /local/mnt/mail/shared/dovecot.mailbox.log The intermediate folder is empty: $ ls -l /local/mnt/mail/shared/Foo-Bugs/ total 4 drwxr-xr-x 5 vmail vmail 4096 Dec 11 12:36 Foo-Bugs-New The mailbox has some folders in it: $ ls -l /local/mnt/mail/shared/Foo-Bugs/Foo-Bugs-New/ total 12 drwxr-xr-x 2 vmail vmail 4096 Dec 11 12:36 cur drwxr-xr-x 2 vmail vmail 4096 Dec 11 12:36 new drwxr-xr-x 2 vmail vmail 4096 Dec 11 12:36 tmp They seem to be empty: $ ls -l /local/mnt/mail/shared/Foo-Bugs/Foo-Bugs-New/* /local/mnt/mail/shared/Foo-Bugs/Foo-Bugs-New/cur: The Sieve log insists the mailbox doesn't exist: $ more /local/mnt/home/Foo-bugs/.dovecot.sieve.log sieve: info: started log at Dec 11 15:35:20. error: msgid=<p06240614d0afdab4a086(a)[99.111.97.136]>: failed to store into mailbox '#Foo/Q popper-Bugs/Foo-Bugs-New': Mailbox doesn't exist: #Foo/Foo-Bugs/Foo-Bugs-New. info: msgid=<p06240614d0afdab4a086(a)[99.111.97.136]>: stored mail into mailbox 'INBOX'. But if I telnet into the server, the mailbox shows up: a1 list "" * * LIST (\HasNoChildren \Junk) "/" Junk * LIST (\Noselect \HasChildren) "/" #Foo * LIST (\Noselect \HasChildren) "/" #Foo/Foo-Patches * LIST (\HasNoChildren) "/" #Foo/Foo-Patches/Foo-Patches-New * LIST (\Noselect \HasChildren) "/" #Foo/Foo-Bugs * LIST (\HasNoChildren) "/" #Foo/Foo-Bugs/Foo-Bugs-New * LIST (\HasNoChildren) "/" INBOX a1 OK List completed. And I can SELECT it: a2 select "#Foo/Foo-Bugs/Foo-Bugs-New" * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 0 EXISTS * 0 RECENT * OK [UIDVALIDITY 1418343553] UIDs valid * OK [UIDNEXT 1] Predicted next UID * OK [NOMODSEQ] No permanent modsequences a2 OK [READ-WRITE] Select completed (0.006 secs). So why can't the Sieve script store into it? -- Randall Gellens Opinions are personal; facts are suspect; I speak for myself only -------------- Randomly selected tag: --------------- Broad-mindedness: The result of flattening high-mindedness out.

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mdbox backup strategy
by Jiří František 11 Dec '14

11 Dec '14

Hi, now we backup maildir with rdiff-backup every single day. Backup takes almost 20hours. I would like to switch to mdbox, but how to acomplish possibility of restore emails from any date what I want? Now if I need to restore mails from the day before yesterday I put the right date to parametrs of rdiff-backup restore command and I get what I want. But if I use doveadm backup I have backup only from last run. Because we have tens of TB email I couldn't do full backup every single day. Is it possible to restore state of mailbox from backup run before the last run if I use doveadm? I don't want do full backup every day, because backup storage is not unlimited. Thank you Jiri

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dovecot.index.log files: what are they?
by Thomas Klausner 11 Dec '14

11 Dec '14

Hi! I have lots of these files: /home/wiz/Mail/my-folder-name/cur/.imap/1238738125.13533_23713.danbala:2,S/dovecot.index.log What are they for? Why are they here? Can I remove them? Thomas

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dovecot & Apple Mail & maildir & lots of Mail
by Thomas Klausner 11 Dec '14

11 Dec '14

Hi! I have dovecot 2.1.12 running on a mail server, and recently configured Apple Mail to connect to it using secure IMAP, for the first time. At the beginning it just showed the inbox and everything was fine, but then I wanted to look at some of my folders and found the 'subscribe' menu. When I opened it, Apple Mail went to discover what mailboxes there are, and that's where my trouble began. It seemed to make good progress for some time (though slow -- over days), and now lists the mailboxes from starting with letters a to d on the left hand side (filling all the visible space, so there might be more). However, whenever Apple Mail gets focus, the cursor becomes a spinning rainbow circle and I can't interact with it. I tried deleting the mail account and setting it up again. The inbox was shown again immediately and Apple Mail was usable, but the first time the cursor moved over the mailboxes on the left hand side, it froze again. There were two imap processes on the server, one rather idle, the other eating CPU for about two minutes, then idling, and some time later it disappeared too. My Mail directory is 31G with about 180 directories, each containing mails in maildir format. Has anyone had similar issues? Is my maildir too big for dovecot too handle? How can I debug this? Thanks, Thomas

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Quota issue with mailbox.
by Grant Pasley 11 Dec '14

11 Dec '14

good morning, i am experiencing an issue with a quot limits with a new install of dovecot with mysql integration. quotas are set to 0 (unlimited) and show as such in the mysql database as well as via the postfixadmin frontend. i use imapsync to transfer mail from another imap server to this one, the total user mailbox size is 18gb. dovecot lda tells me mailbox is full even though i have set mailbox to unlimited. *the the error is:* Dec 9 19:17:01 sentinel dovecot: lda(grant(a)xxxxxxx.com): msgid=<e8b2c897c11cafda2c2ab93a92beb681(a)localhost.localdomain>: rejected: Quota exceeded (mailbox for user is full) *[root@sentinel dovecot]# grep -v '^ *$#.*$\?$' dovecot-mysql.conf* driver = mysql connect = host=localhost dbname=postfix user=postfix password=xxxxxxxx default_pass_scheme = MD5-CRYPT password_query = SELECT username as user, password, concat('/home/vmail/', maildir) as userdb_home, concat('maildir:/home/vmail/', maildir) as userdb_mail, 101 as userdb_uid, 12 as userdb_gid FROM mailbox WHERE username = '%u' AND active = '1' user_query = SELECT concat('/home/vmail/', maildir) as home, concat('maildir:/home/vmail/', maildir) as mail, 101 AS uid, 12 AS gid, CONCAT('*:messages=10000:bytes=', quota) as quota_rule FROM mailbox WHERE username = '%u' AND active = '1' *[root@sentinel dovecot]# dovecot -n* *# 2.0.9: /etc/dovecot/dovecot.conf* *# OS: Linux 2.6.32-504.1.3.el6.x86_64 x86_64 CentOS release 6.6 (Final) ext4* auth_mechanisms = plain login dict { quotadict = mysql:/etc/dovecot/dovecot-dict-quota.conf } first_valid_gid = 12 first_valid_uid = 101 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lmtp_save_to_detail_mailbox = yes mail_location = maildir:/home/vmail/%d/%n 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 passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } plugin { acl = vfile:/etc/dovecot/acls quota = dict:user::proxy::quotadict sieve = ~/dovecot.sieve sieve_before = /home/sieve/globalfilter.sieve sieve_dir = ~/sieve sieve_max_script_size = 1M trash = /etc/dovecot/trash.conf } protocols = imap pop3 lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { group = mail mode = 0666 user = vmail } } service dict { unix_listener dict { group = mail mode = 0666 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service imap { vsz_limit = 256 M } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } ssl_cert = </etc/pki/tls/certs/xxxxxxxxxxxxxxxx.crt ssl_key = </etc/pki/tls/private/xxxxxxxxxxxxxxxxx.key userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { mail_plugins = quota sieve postmaster_address = postmaster@xxxxxxxxxxxxxx } protocol imap { imap_client_workarounds = delay-newmail mail_plugins = quota imap_quota trash } protocol lmtp { mail_plugins = sieve } protocol pop3 { mail_plugins = quota pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } protocol sieve { managesieve_implementation_string = Dovecot Pigeonhole managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 } --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com

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Re: dovecot.index.log files: what are they?
by Joseph Tam 10 Dec '14

10 Dec '14

Thomas Klausner writes: >> RTFM: http://wiki2.dovecot.org/IndexFiles > > Thanks, but I had read this. > > I still don't know what they are good for, why they stay there for > days and if I can remove them. After all, they are not the caches, but > some "transaction logs" (I don't know what this is). Re-read the page, all the way to the bottom. Interpreting the last section: The transaction log records recent changes to a mailbox, and together with the index, gives the current state of the mailbox. This is an I/O optimization so that mailbox states changes are quickly updated without having to compare an entire index file with the last (in-memory?) index. For large mailboxes, this can save a lot of I/O. It may persist because updates to the indices are not done immediately (again, possibly to reduce I/O), so the current mailbox state is reflected by the index file *and* deltas in the transaction log. I suspect that you could remove the transaction logs (if you do not use dbox) and dovecot should rebuild them (or more likely, rebuild the indices). Joseph Tam <jtam.home(a)gmail.com>

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devoid mailbox status for mail reloaded from a tape backup
by Stephen Lidie 10 Dec '14

10 Dec '14

dovecot --version 2.2.10 I've only be able to status a mailbox for currently existing users, is it possible to status a mailbox reloaded from tape to an alternate location? The user may or may not exist at this time, but I still need to inspect the mailbox ... thank you, Steve

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Renaming directories with subdirectories over IMAP
by Зинин Дмитрий Андреевич 10 Dec '14

10 Dec '14

Hi, I¹ve a problem with renaming directories with subdirectories. In root directory I create directory named ³lvl1² with subdirectory ³lvl2² When I rename directory lvl1 to lvl1-new I get: 1. /lvl1-new with subdir lvl2 but I can use only /lvl1-new and not /lvl1-new/lvl2 2. /lvl1 with subdir lvl2 but I can use only /lvl1/lvl2 and not /lvl1 Is it a feature or a bug? If bug is there a fix? PS: CentOS 6.6 and Dovecot 2.0.9-7 from official repository with all updates. Best regards, Dmitriy

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Panic: file mail-index-sync-update.c: line 250 (sync_expunge_range): assertion failed: (count > 0)
by Ralf Hildebrandt 10 Dec '14

10 Dec '14

We're seeing this: % doveadm force-resync -u USERNAME INBOX doveadm(USERNAME): Panic: file mail-index-sync-update.c: line 250 (sync_expunge_range): assertion failed: (count > 0) doveadm(USERNAME): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0x817ad) [0x33ab08317ad] -> /usr/lib64/dovecot/libdovecot.so.0(default_fatal_handler+0x3a) [0x33ab08318ba] -> /usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x33ab07d7570] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xced79) [0x33ab0b7ad79] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mail_index_sync_record+0xc67) [0x33ab0b7ba07] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mail_index_sync_map+0x1a4) [0x33ab0b7bdf4] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mail_index_map+0x15c) [0x33ab0b6b70c] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xba44a) [0x33ab0b6644a] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xba5e8) [0x33ab0b665e8] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mail_index_open+0x88) [0x33ab0b666f8] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x45762) [0x33ab0af1762] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mdbox_map_open_or_create+0x42) [0x33ab0af1a92] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mdbox_storage_rebuild_in_context+0x10b) [0x33ab0af839b] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mdbox_sync_begin+0x222) [0x33ab0af61f2] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mdbox_sync+0x45) [0x33ab0af67d5] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mdbox_storage_sync_init+0xa8) [0x33ab0af68e8] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x3d) [0x33ab0b2490d] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) [0x33ab0b24a87] -> doveadm(+0x1c0dc) [0x5a1f7f90dc] -> doveadm(+0x1bd1b) [0x5a1f7f8d1b] -> doveadm(doveadm_mail_try_run+0x267) [0x5a1f7f9d37] -> doveadm(main+0x404) [0x5a1f7f5a64] -> /lib64/libc.so.6(__libc_start_main+0xf5) [0x33ab042cd55] -> doveadm(+0x18cb9) [0x5a1f7f5cb9] # doveadm quota get -u USERNAME Quota name Type Value Limit % user STORAGE 4587 3145728 0 user MESSAGE 3 - 0 The user has an EMPTY mailbox with 3 folders (when connecting via IMAP) But looking in $HOME, I'm seeing: # du -sh . 1.6G. The user cannot receive mail: Dec 10 14:09:57 lmtp(86133, USERNAME): Fatal: master: service(lmtp): child 86133 killed with signal 6 (core dumps disabled) Dec 10 14:09:57 lmtp(106153, USERNAME): Fatal: master: service(lmtp): child 106153 killed with signal 6 (core dumps disabled) -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein

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doveadm -A operations failing due to broken mdbox
by Ralf Hildebrandt 10 Dec '14

10 Dec '14

I'm using "/usr/bin/doveadm purge -A" to purge the mdboxes of my users. Unfortunately this command terminates prematurely once it reaches a defective mdbox! Is there a workaround for this? Like using doveadm to get a list of valid users and then run "doveadm purge -u" on each of those? -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein

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Re: Required SSL with exceptions
by dovecot＠outputservices.com 09 Dec '14

09 Dec '14

On 12/08/14 23:50, SATOH Fumiyasu wrote: > Hi, > > At Mon, 08 Dec 2014 16:01:43 -0600, > List wrote: >> Essentially we would like to host IMAP with SSL enforced for any connections coming from anywhere except the subnet where our other mail servers reside. The idea is to not install a local instance of dovecot on the webmail/carddav/caldav servers to reduce the number of instances that need to be managed. Is it possible to have two imap listeners, where ssl is enforced on one port, and not on another? > > Use login_trusted_networks parameter. > What is the syntax for login_trusted_networks? The docs and WIKI do not show it.

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Dovecot Pre-Login Scripting
by Jeremy Hayden 09 Dec '14

09 Dec '14

Hello, We are in the process of migrating users from one system that is currently not hosted by our company, to our dovecot 2.2.10 installation. We are planning on doing the dovecot dsync command for copying users mail over to the new installation, but the one snag we are running into is ensuring we are able to get the users credentials stored in our system. We are migrating the email from a Gmail ISP account to our installation as they are discontinuing their support next year. The setup is a multistep process we are hoping to accomplish. When a connection is started to our cluster, it will first check the database to see if the credentials match, if not it will verify against Gmail's servers. If the Gmail test is successful, it would pass the credentials to a script to store them for future login attempts. Once the authentication is verified and stored locally, we would run a post-login script to run dsync to copy the mail down to the new system. The problem we are running into is efficiently and appropriately hooking into the dovecot authentication process. We are unable to find anything regarding PreLogin Scripting to contrast the PostLoginScripting we are currently using, and the only other thing we are currently seeing as a possible option is running a custom authentication socket or password imap-login to a script. This seems like it would be a resource nightmare depending on the server load and are hoping for a more elegant option to be unveiled. Any other options or suggestions are welcome. We are also wondering, if we have to go with the custom authentication setup, if there are any examples out there to base our scripts off in setting it up. Thank you, Jeremy

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Required SSL with exceptions
by List 09 Dec '14

09 Dec '14

I have a Dovecot cluster which is on separate machines from my webmail/caldav/cardav cluster, and I currently have the system setup with ssl = required. Unfortunately the caldav/cardav server I am running doesn't support STARTTLS so I was wondering if there is a way to still enforce ssl for every connection with the exception of a certain subnet, or if there is a better way to accomplish this without install a local install of Dovecot on each of my caldav/cardav servers.

3 4

Using dovecot with existing mbox hieararchy - possible?
by Chris Green 08 Dec '14

08 Dec '14

I currently use mutt to read my E-Mail on a machine which runs a postfix server to receive mail by SMTP. Mail is actually delivered to the final mbox mailboxes by a custom filtering script writtin in Python. Will dovecot happily serve mail from the existing hierarchy (obviously if I configure it right) so that I can connect using IMAP to my server machine to read mail? The mbox files are all under ~/Mail with several levels of directories in some trees. Does dovecot need any sort of notification from postfix (or my Python script) to indicate that new mail has been delivered or does it just re-scan the mbox files at intervals to see changes? -- Chris Green

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sdbox and IMAP folders
by Jeff Larsen 08 Dec '14

08 Dec '14

We have just migrated from cyrus-imap to dovecot 2.2.9 on Ubuntu. By default, all our user's manually created folders appear at the same folder level as INBOX (i.e., they are next to INBOX, and not inside INBOX in a typical tree view of the folders). But on Dovecot, users are able to create new folders either parallel to INBOX or as subfolders within INBOX, which I think is going to lead to confusion for our users, especially when working from the limited UI of a smartphone client where folder hierarchy is not as easy to visualize. With cyrus, this behavior depended on the client setting for "IMAP server directory" as it is called in Thunderbird. If the setting was given the value "INBOX", then all folders were parallel to INBOX and you could not create any folder that would appear in the tree inside INBOX. With the setting empty, then all folders appeared as subfolders of INBOX. It was all or nothing. When the mail accounts were migrated to dovecot, the existing top-level user folders were created in dovecot at the same level as INBOX. We did nothing intentional to get this result. We just used cyrus2dovecot to export to maildir, then doveadm sync to convert to the final sdbox. With dovecot, when "IMAP server directory" is empty, we get the original folder tree with all folders parallel to inbox, but users are also able to create subfolders inside INBOX . We are using sdbox storage and the folder heirarchy as seen in the client tree (parallel folders and subfolders) is also reflected in the server's local file system. If we change the "IMAP server directory" setting on the client while using dovecot, then all the folders that were previously at the same level as INBOX become inaccessible, so that's not a viable option. So, my question is this: Can I replicate the cyrus behavior where INBOX subfolders are an all-or-nothing option? Or are we stuck with users (having questionable file management skills in the first place) getting lost between INBOX subfolders and top-level folders. Thanks, Jeff root:~# doveconf -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-40-generic x86_64 Ubuntu 14.04.1 LTS auth_mechanisms = plain login auth_verbose = yes listen = * mail_location = sdbox:%h:LAYOUT=fs:ALT=/var/alt-vmail/%n mail_plugins = " quota" 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 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 = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { quota = dict:%n::file:%h/dovecot-quota quota_grace = 10%% quota_rule = *:storage=100M quota_rule2 = Trash:storage=+20M sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap sieve" service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0666 } } service imap-login { inet_listener imap { address = localhost port = 143 } inet_listener imaps { port = 0 } } service managesieve-login { inet_listener sieve { address = localhost port = 4190 } } ssl = required ssl_cert = </etc/ssl/certs/mail.XXXX.com.crt ssl_key = </etc/ssl/private/mail.XXXX.com.key userdb { args = username_format=%n /etc/dovecot/qec-quota-override default_fields = uid=vmail gid=vmail home=/var/vmail/%n driver = passwd-file } userdb { args = /etc/dovecot/dovecot-ldap.conf.ext default_fields = uid=vmail gid=vmail home=/var/vmail/%n driver = ldap } protocol lda { mail_plugins = " quota sieve" } protocol imap { mail_plugins = " quota imap_quota" }

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