December 2016 - dovecot

doveadm edit headers?
by MRob 05 Dec '16

05 Dec '16

Hello, is there a way to edit a message header using doveadm? I see how I can fetch the things I need, but even if I can't edit in place; if I extract the full message, edit it, there doesn't seem to be a way to append it back again?

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Virtual mailboxes, please help
by Peter Hodur 05 Dec '16

05 Dec '16

Hi, I'm trying to setup virtual mailboxes. My setup: - migrated from Courier, so: separator = . prefix = INBOX. inbox = yes In doc i have read, thant i need to create separate namespace. namespace { prefix = virtual/ separator = / location = virtual:~/Maildir/virtual So i need to change / with . (Dot) in prefix and separator? Do i need to append LAYOUT=maildir++ to location? Where must location point? To the same directory where mail_location? Or do i need to create separate hierarchy for virtual mailboxes? Thanks for any answer ;) Peter ml.

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Mail marked read upon download
by Curtis Vaughan 05 Dec '16

05 Dec '16

Just set up a new server with postfix and dovecot. I don't know why, but as soon as mail is accessed it is marked read. I'll see emails momentarily marked unread, but then switch to read later although I haven't opened them. This has never been an issue before. Any ideas why? Thanks. Curtis

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CVE-2016-8562 in dovecot
by Aki Tuomi 05 Dec '16

05 Dec '16

We are sorry to report that we have a bug in dovecot, which merits a CVE. See details below. If you haven't configured any auth_policy_* settings you are ok. This is fixed with https://git.dovecot.net/dovecot/core/commit/c3d3faa4f72a676e183f34be960cff1… and https://git.dovecot.net/dovecot/core/commit/99abb1302ae693ccdfe0d57351fd42c… Important vulnerability in Dovecot (CVE-2016-8562) CVSS score: 7.4 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H) Affected version(s): 2.2.25.1 up to 2.2.26.1 Fixed in: 2.2.27.1rc1 Short summary: Dovecot auth component can be crashed by remote user when auth-policy component is activated. If auth-policy component has been activated in Dovecot, then remote user can use SASL authentication to crash auth component. Workaround is to disable auth-policy component until fix is in place. This can be done by commenting out all auth_policy_* settings. Aki Tuomi Dovecot oy

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SAML | Input buffer full (no auth attempts in 0 secs)
by mj 04 Dec '16

04 Dec '16

Hi, In my journey to enable SAML auth for our webmail (sogo.nu) I have created a password-less dovecot imap listener on 127.0.0.1/32, so that once a user is SAML authenticated for the SOGo webmail, SOGo can connect to dovecot on 127.0.0.1:143 with something like "01 LOGIN username randompassword". Watching this (tcpflow) as it happens,i can see the following auth attempt coming from sogo: > 1 login "username" "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" Note, the actual 'password' is even longer. This connection attempt is causing dovecot to throw the following error: > Dec 02 22:34:33 imap-login: Info: Disconnected: Input buffer full (no > auth attempts in 0 secs): user=<>, rip=x.y.z.32, lip=x.y.z.68, > session=<d+o3tLNCaOvAV48g> and > BYE Input buffer full, aborting So this doesn't work. :-( The question: is there a way to make this work? (make the input buffer larger, for example..?) Or any other ideas to make this work? Thanks in advance, MJ

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move IMAP folder
by James 04 Dec '16

04 Dec '16

I am trying to move an IMAP folder from Thunderbird and nothing happens. What /var/log file should I look in?

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RE: First steps in Dovecot; IMAP not working
by Richard 04 Dec '16

04 Dec '16

> Date: Tuesday, October 18, 2016 13:12:39 +0200 > From: Moi <anic297(a)mac.com> > > Thank you. It worked and I now have several log files to check. > > In the meantime, I've tried once again to send a message to > "mailtest" from an outside address; this time, I got an error reply: > > This report relates to a message you sent with the following header > fields: > > Message-id: <00e201d2290f$67da8c70$378fa550$(a)mac.com> > Date: Tue, 18 Oct 2016 09:15:21 +0200 > From: Moi > To: 'Mail Test' <mailtest(a)barbu.sytes.net> > Subject: Test > > Your message cannot be delivered to the following recipients: > > Recipient address: mailtest(a)barbu.sytes.net > Reason: Illegal host/domain name found > <end of reply> > > Yet another area with a problem; at least this is now a valid > reason for it to not work. > Is this a misconfiguration of my DNS server? Assuming that "barbu.sytes.net" is the intended hostname (not something made up to obscure the real name), there is an MX-record for that that points to "mail.barbu.sytes.net", but there is no A-record for the "mail." hostname. There is an A-record for "mail.sytes.net", in case that is what you were intending, in which case you'd need to fix the MX on "barbu.sytes.net".

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Show pigeonhole version?
by MRob 04 Dec '16

04 Dec '16

How can I query the current pigeonhole version from a running instance to verify it is what I expect? Possible to get `dovecot --version` to show things like that?

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No stats under FreeBSD 10.3
by Ruud Boon 04 Dec '16

04 Dec '16

HI, I’m currently testing the stats module of Dovecot (2.2.26.0 (23d1de6)) Looks like there no statistics under FreeBSD. Server isn’t busy yet but got at least a few connection open. Added mail_plugins = $mail_plugins stats plugin { stats_refresh = 30 secs stats_track_cmds = yes } doveadm stats dump global reset_timestamp last_update num_logins num_cmds num_connected_sessions auth_successes auth_master_successes auth_failures auth_db_tempfails auth_cache_hits auth_cache_misses user_cpu sys_cpu clock_time min_faults maj_faults vol_cs invol_cs disk_input disk_output read_count read_bytes write_count write_bytes mail_lookup_path mail_lookup_attr mail_read_count mail_read_bytes mail_cache_hits 1478031539 0.000000 0 0 0 0 0 0 0 0 0 0.0 0.0 0.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cheers, Ruud

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CentOS 7
by Eric Broch 04 Dec '16

04 Dec '16

Hello List, I'm building a dovecot-2.2.27 RPM for CentOS 7 and running into some issues The dovecot.spec (http://pkgs.fedoraproject.org/cgit/rpms/dovecot.git/tree/dovecot.spec) file runs 'autoreconf -I . -fiv' for aarch64 support just before the %configure option but is failing This worked fine on <= 2.2.26.0 when there was an m4/*.m4 directory (with *.m4 in it) in the sources. Is there something I should be aware of? Was the m4 directory removed for a reason? As a workaround I created the m4 directory and everything worked out, but is this the best solution? Eric

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