- dovecot - dovecot.org

Error on upgrade to 2.2.25 from 2.2.24
by Goetz R Schultz 02 Jul '16

02 Jul '16

Hi, I have compiled the latest version with those flags: ./configure --with-pgsql --with-sql under FreeBSD/amd64. This worked fine with the previous version. Compilation also works without errors. Yet when I start DC I get this error: Jul 1 22:48:55 section31 dovecot: master: Dovecot v2.2.25 () starting up for imap Jul 1 22:48:55 section31 dovecot: master: Panic: kevent(EV_ADD, READ, 55) failed: Bad file descriptor This does not hapen with the previous version. I could not find any change note that would point in that direction. Any clues? Did I miss something to set? -- Thanks and regards Goetz "I intend to live forever - so far, so good." =============================================== /"\ Get the rootcertificate at www.cacert.org \ / ASCII Ribbon Campaign against HTML e-mail X / \ Verify the cert @ CaCert.Com =============================================== "Si forte in alienas manus oberraverit hec peregrina epistola incertis ventis dimissa, sed Deo commendata, precamur ut ei reddatur cui soli destinata, nec preripiat quisquam non sibi parata."

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Re: Looking for GSSAPI config [was: Looking for NTLM config example]
by Mark Foley 01 Jul '16

01 Jul '16

Aki - made your suggested changes, but no joy :( My /etc/krb5.conf: ------SNIP-------- [libdefaults] default_realm = HPRS.LOCAL dns_lookup_realm = false dns_lookup_kdc = true [libdefaults] default_realm = HPRS.LOCAL dns_lookup_kdc = true kdc_timesync = 1 ccache_type = 4 forwardable = true proxiable = true fcc-mit-ticketflags = true [realms] HPRS.LOCAL = { default_domain = hprs.local auth_to_local_names = { Administrator = root } } [domain_realm] hprs.local = HPRS.LOCAL # this is not a mistake .hprs.local = HPRS.LOCAL ------PINS----------- you wrote: > You can remove the krb4_ stuff I've remove krb4_ stuff from the [libdefaults] and eliminated the [login] section altogether. Question on [realms]Administrator: should that really be root or should it be my AD Administrator? my doveconf -n is exactly the same as posted below, but in particular: auth_krb5_keytab = /etc/krb5.keytab auth_mechanisms = plain login gssapi When I reloaded dovecot no mail was delivered to anyone (even though everyone was still using plain/ssl, no one yet configured for gssapi). In /var/log/maillog I got (repeatedly): Jun 28 09:43:36 mail dovecot: imap-login: Warning: Auth process not responding, delayed sending initial response (greeting): user=<>, rip=192.168.0.54, lip=192.168.0.2, session=<Jy/e0lY2WADAqAA2> Jun 28 09:43:37 mail dovecot: auth: Fatal: Unknown authentication mechanism 'gssapi' Jun 28 09:43:37 mail dovecot: master: Error: service(auth): command startup failed, throttling for 60 secs Jun 28 09:43:37 mail dovecot: imap-login: Warning: Auth process not responding, delayed sending initial response (greeting): user=<>, rip=166.170.27.161, lip=98.102.63.107, TLS, session=</GXn0lY22wCmqhuh> This looks pretty bad right off. Why "Unknown authentication mechanism 'gssapi'"? Do you have any idea from the configs I've posted? I'm rather depressed about this. I thought I'd finally able to get AD authentication going for Dovecot. Not ready to give up though! Suggestions? THX -- Mark -----original Message----- > Subject: Re: Looking for GSSAPI config [was: Looking for NTLM config example] > To: dovecot(a)dovecot.org > From: Aki Tuomi <aki.tuomi(a)dovecot.fi> > Date: Tue, 28 Jun 2016 15:13:11 +0300 > > On 28.06.2016 09:27, Mark Foley wrote: > > Aki, > > > > To review your 5 points: > > > > On Mon, 27 Jun 2016 09:18:54 +0300 Aki Tuomi <aki.tuomi(a)dovecot.fi> wrote: > > > >> 1. Functional AD or Kerberos environment > >> 2. Time synced against your KDC (which is your Domain Controller on Windows) > >> 3. /etc/krb5.conf configured > >> 4. Both forward / reverse DNS names correct for clients and servers. > >> Reverse is only mandatory for servers, but having them right will work > >> wonders. Most kerberos problems are about DNS problems. > >> 5. You need a keytab. This keytab needs to hold entries like > >> IMAP/your.host.name@REALM and IMAP/$HOSTNAME@REALM. You can generate > >> these on any Windows DC server (at least). > > I believe I am good on 1,2 and 4. I downloaded and installed kerberos and tested it with kinit > > and klist according to the instructions at > > https://wiki.samba.org/index.php/Setup_a_Samba_Active_Directory_Domain_Cont… > > > > As to the the keytab (#5) I did the following: > > > > $ samba-tool domain exportkeytab /etc/krb5.keytab > > > > which created the file. I made this owned and readable by group dovecot, per instructions at > > http://wiki2.dovecot.org/Authentication/Kerberos. Running `klist -k /etc/krb5.keytab` shows me > > configuration listing all the users and computers in the domain, mostly in triplicate. A > > partial list: > > > > Keytab name: FILE:/etc/krb5.keytab > > KVNO Principal > > ---- -------------------------------------------------------------------------- > > 18 COMMON$(a)HPRS.LOCAL > > 18 COMMON$(a)HPRS.LOCAL > > 18 COMMON$(a)HPRS.LOCAL > > 1 MAIL$(a)HPRS.LOCAL > > 1 MAIL$(a)HPRS.LOCAL > > 1 MAIL$(a)HPRS.LOCAL > > 1 charmaine(a)HPRS.LOCAL > > 1 charmaine(a)HPRS.LOCAL > > 1 charmaine(a)HPRS.LOCAL > > > > where COMMON and MAIL are hosts and charmaine is a user. I don't really understand the listing, > > but am assuming it is OK. > > Strange that you do not have any host/ entries. Maybe it works without. > > >> setspn -q is helpful here, also setspn command in general. > > I have no such command in my system. Is that a Windows thing? > > > > Yes, but you can do those kind of things in Samba too. > > > As to the /etc/krb5.conf, the default one generated by samba is: > > > > [libdefaults] > > default_realm = HPRS.LOCAL > > dns_lookup_realm = false > > dns_lookup_kdc = true > > > > I'd like to modify that to your suggestions, but I need more help. You have (with my questions): > > > >> Here is a *SAMPLE* configuration: > >> > >> [libdefaults] > >> default_realm = YOUR.REALM > >> dns_lookup_kdc = true > >> krb4_config = /etc/krb.conf > >> krb4_realms = /etc/krb.realms > > Here, you have krb4_*. Do you mean that? My config file is krb5.conf. Should I rather have: > > You can remove the krb4_ stuff > > > krb5_config = /etc/krb5.conf > > > > Also, I have no /etc/krb*.realms file. Do I need this? If so, what should be in there? > You don't necessarely require that. > > >> kdc_timesync = 1 > >> ccache_type = 4 > >> forwardable = true > >> proxiable = true > >> fcc-mit-ticketflags = true > >> > >> [realms] > >> YOUR.REALM = { > >> default_domain = your.domain.name > >> auth_to_local_names = { > >> Administrator = root > >> } > >> } > > I suppose my "YOUR.REALM" is HPRS.LOCAL, right? Is my "your.domain.name" my FQDN for my AD > > server: mail.hprs.local, or is it just hprs.local? (or something else!) > > HPRS.LOCAL is your REALM, hprs.local is your domain name. > > > >> [domain_realm] > >> your.domain.name = YOUR.REALM > >> # this is not a mistake > >> .your.domain.name = YOUR.REALM > >> [login] > >> krb4_convert = true > >> krb4_get_tickets = false > > Likewise here a question on the whole krb4 versus krb5 thing. > > > > Your closing comment: > > > >> Also, note that kerberos can only act as AUTHENTICATION system. It > >> cannot act as USER DATABASE. For that you need to configure LDAP or > >> something else. With Active Directory LDAP is probably a damn good idea. > > I have the following doveconf -n: > > > > # 2.2.15: /usr/local/etc/dovecot/dovecot.conf > > # OS: Linux 3.10.17 x86_64 Slackware 14.1 > > auth_debug_passwords = yes > > auth_krb5_keytab = /etc/krb5.keytab > > auth_mechanisms = plain login gssapi > > auth_verbose = yes > > auth_verbose_passwords = plain > > disable_plaintext_auth = no > > info_log_path = /var/log/dovecot_info > > mail_location = maildir:~/Maildir > > passdb { > > driver = shadow > > } > > protocols = imap > > ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2015-08-14/57aa6ed6ae98b4c7.crt > > ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/mail.ohprs.org.key > > userdb { > > driver = passwd > > } > > verbose_ssl = yes > > > > I assume the passwd driver for the userdb is OK? Seems to me it should work with gssapi, but in > > any case I still have all but this test workstation NOT using gssapi, so I still need to > > accomodate them. > > > > Thanks, --Mark > passwd driver is fine, yes, if you ensure that users can be found. > > Aki >

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Suggestions? Moving maildir to new storage and may be switch to mdbox
by Götz Reinicke - IT Koordinator 01 Jul '16

01 Jul '16

Hi, we got a new storage for our mails and now we think about the best way to use it. Currently about 1TB is stored in maildirs, some mail has been moved to client side local storage temporarily to get space on the old storage. I think of different options, some downtime in mind: a) stay with maildir and just rsync/move all mail to the new storage, mount the new storage at the old mountpoint (or may be new mountpoint and edit the dovecot config). b) "dsync backup" users maildir to mdboxes at a temp mountpoint and change the dovecot config afterwords. c) your suggestions or best practice Thanks for feedback . Götz

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v2.2.25 release candidate released
by Timo Sirainen 01 Jul '16

01 Jul '16

http://dovecot.org/releases/2.2/rc/dovecot-2.2.25.rc1.tar.gz http://dovecot.org/releases/2.2/rc/dovecot-2.2.25.rc1.tar.gz.sig Quite a lot of changes. Please test out before the final v2.2.25 release, which I'm planning for tomorrow. Especially the new lib-dcrypt might have compiling problems with some OpenSSL versions. * lmtp: Start tracking lmtp_user_concurrency_limit and reject already at RCPT TO stage. This avoids MTA unnecessarily completing DATA only to get an error. * doveadm: Previously only mail settings were read from protocol doveadm { .. } section. Now all settings are. + quota: Added quota_over_flag_lazy_check setting. It avoids checking quota_over_flag always at startup. Instead it's checked only when quota is being read for some other purpose. + auth: Added a new auth policy service: http://wiki2.dovecot.org/Authentication/Policy + auth: Added PBKDF2 password scheme + auth: Added %{auth_user}, %{auth_username} and %{auth_domain} + auth: Added ":remove" suffix to extra field names to remove them. + auth: Added "delay_until=<timestamp>[+<max random secs>]" passdb extra field. The auth will wait until <timestamp> and optionally some randomness and then return success. + dict proxy: Added idle_msecs=<n> parameter. Support async operations. + Performance improvements for handling large mailboxes. + Added lib-dcrypt API for providing cryptographic functions. + Added "doveadm mailbox update" command + imap commands' output now includes timing spent on the "syncing" stage if it's larger than 0. + cassandra: Added metrics=<path> to connect setting to output internal statistics in JSON format every second to <path>. + doveadm mailbox delete: Added -e parameter to delete only empty mailboxes. Added --unsafe option to quickly delete a mailbox, bypassing lazy_expunge and quota plugins. + doveadm user & auth cache flush are now available via doveadm-server. + doveadm service stop <services> will stop specified services while leaving the rest of Dovecot running. + quota optimization: Avoid reading mail sizes for backends which don't need them (count, fs, dirsize) + Added mailbox { autoexpunge_max_mails=<n> } setting. + Added welcome plugin: http://wiki2.dovecot.org/Plugins/Welcome + fts: Added fts_autoindex_exclude setting. - v2.2.24's MIME parser was assert-crashing on mails having truncated MIME headers. - auth: With multiple userdbs the final success/failure result wasn't always correct. The last userdb's result was always used. - doveadm backup was sometimes deleting entire mailboxes unnecessarily. - doveadm: Command -parameters weren't being sent to doveadm-server. - If dovecot.index read failed e.g. because mmap() reached VSZ limit, an empty index could have been opened instead, corrupting the mailbox state. - imapc: Fixed EXPUNGE handling when imapc_features didn't have modseq. - lazy-expunge: Fixed a crash when copying failed. Various other fixes. - fts-lucene: Fixed crash on index rescan. - auth_stats=yes produced broken output - dict-ldap: Various fixes - dict-sql: NULL values crashed. Now they're treated as "not found".

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Fwd: Re: Dictionary quota with Flat file database
by Sam 01 Jul '16

01 Jul '16

Hello Aki, Finally I am using maildir as quota backend and it works! I set the second way like it was write here http://wiki2.dovecot.org/Quota/Maildir With this method The quota can be personalized per user manually. I only have to create the file once for the new users. But I don't know if these following options in 90-quota.ext works again : quota_rule2 = Trash:storage=+100M quota_grace = 10%% I'm going to test that. Thanks a lot! Sam Le 30/06/2016 à 16:13, aki.tuomi(a)dovecot.fi a écrit : >> On June 30, 2016 at 4:41 PM Sam <sr42354(a)gmail.com> wrote: >> >> >> Hello, >> >> I want specific quotas for certain users and I looking for doing that >> with dictionary quota backend and Flat file. >> >> Because I am using "active directory" with PAM for authenticate, I can't >> get per-user quota limits with set/override them by returning >> "quota_rule" extra field from userdb. >> >> I started reading http://wiki1.dovecot.org/Quota/Dict, saw some good >> stuff... >> >> The problem is that I don't understand how to set the limit in the users >> files. >> >> If I open one created file I only see the current number of messages and >> the actual size. Not the quota limits... >> >> vi /home/vmail/john.doe/Maildir/dovecot-quota : >> priv/quota/messages >> 13 >> priv/quota/storage >> 600201 >> >> Here is /etc/dovecot/conf.d/90-quota.conf file details : >> plugin { >> # I think I have to set the default limits here >> quota_rule = *:storage=10G:messages=10000 >> } >> ... >> plugin { >> quota = dict:user::file:%h/Maildir/dovecot-quota >> # same result with : >> # quota = dict:User::file:%h/Maildir/dovecot-quota >> } >> >> my server : CentOS Linux release 7.2.1511 >> dovecot : dovecot-2.2.10-5.el7.x86_64 >> >> Thanks for helping. >> Sam > Hi! > > You can use passwd-file userdb for setting additional attributes. > > Aki

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Released Pigeonhole v0.4.15.rc1 for Dovecot v2.2.25.rc1.
by Stephan Bosch 01 Jul '16

01 Jul '16

Hello Dovecot users, This upcoming release is all about bug fixes, of which only one is really important. It affects the new imapsieve plugin. Changelog v0.4.15: - imapsieve plugin: For any mail transaction, the mailbox was opened a second time, even if no mailbox rule matched. This was unintentional, useless and caused problems when the imapsieve plugin was used with other plugins like acl. - extprograms plugin: Significantly improved error handling. No stream errors were logged. - Several small fixes based on static analysis. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.2/rc/dovecot-2.2-pigeonhole-0.4.15… http://pigeonhole.dovecot.org/releases/2.2/rc/dovecot-2.2-pigeonhole-0.4.15… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this release candidate and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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quota-status service
by Michael Fox 30 Jun '16

30 Jun '16

I'm trying to understand the quota-status service, but I can't find complete documentation. The quota-status service is mentioned here: http://wiki.dovecot.org/Quota And an example configuration is shown: service quota-status { executable = quota-status -p postfix inet_listener { port = 12340 # You can choose any port you want } client_limit = 1 } But I can't find any information on quota-status. "man quota-status" returns nothing. I am unable to find a "quota-status" file on my machine. Where is the executable located? What does the "-p postfix" option do? Are there any other command line options? The above wiki page shows three quota_status_* options in use: quota_status_success = DUNNO quota_status_nouser = DUNNO quota_status_overquota = "552 5.2.2 Mailbox is full" Where are their meanings documented? What are the allowed values? Are there other quota_status_* options? Thanks in advance. Thanks, Michael

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quota_full_tempfail
by Felipe Gasper 30 Jun '16

30 Jun '16

Hi all, What specifically does this flag do? Does it affect what happens: -------------- - when the drive is full? - when the system user’s disk quota is full? - when the mailbox’s quota is full? -------------- Also, does it work with both LDA and LMTP? I don’t see much on this option in the docs. Thank you! -Felipe Gasper Houston, TX

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Re: Error when searching in mailfolders
by Christoph Pleger 30 Jun '16

30 Jun '16

Hello, >>> Lucene library is throwing an error, which crashes Dovecot. Maybe Dovecot >>> should catch the error, but it would still be broken. Try deleting the lucene indexes and rebuilding them? >> Deleting the indexes helped, but after they had been rebuilt, the error occurred again. > Could you enable core dumps and run bt full in gdb? I attached the result. Regards Christoph

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Remove my email id from mailing list
by Mayuri AgarwAl 30 Jun '16

30 Jun '16

Sent from my iPhone

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